diff --git a/Source/Core/DolphinQt/NetPlay/ChunkedProgressDialog.cpp b/Source/Core/DolphinQt/NetPlay/ChunkedProgressDialog.cpp
index c78d038dfe63..46e6223ac4a3 100644
--- a/Source/Core/DolphinQt/NetPlay/ChunkedProgressDialog.cpp
+++ b/Source/Core/DolphinQt/NetPlay/ChunkedProgressDialog.cpp
@@ -25,7 +25,7 @@
 static QString GetPlayerNameFromPID(int pid)
 {
   QString player_name = QObject::tr("Invalid Player ID");
-  auto client = Settings::Instance().GetNetPlayClient();
+  const auto client = Settings::Instance().GetNetPlayClient();
   if (!client)
     return player_name;
 
@@ -73,13 +73,13 @@ void ChunkedProgressDialog::show(const QString& title, const u64 data_size,
   m_progress_box->setTitle(title);
   m_data_size = data_size;
 
-  for (auto& pair : m_progress_bars)
+  for (const auto& pair : m_progress_bars)
   {
     m_progress_layout->removeWidget(pair.second);
     pair.second->deleteLater();
   }
 
-  for (auto& pair : m_status_labels)
+  for (const auto& pair : m_status_labels)
   {
     m_progress_layout->removeWidget(pair.second);
     pair.second->deleteLater();
@@ -88,7 +88,7 @@ void ChunkedProgressDialog::show(const QString& title, const u64 data_size,
   m_progress_bars.clear();
   m_status_labels.clear();
 
-  auto client = Settings::Instance().GetNetPlayClient();
+  const auto client = Settings::Instance().GetNetPlayClient();
   if (!client)
     return;
 
@@ -142,7 +142,7 @@ void ChunkedProgressDialog::SetProgress(const int pid, const u64 progress)
 
 void ChunkedProgressDialog::reject()
 {
-  auto server = Settings::Instance().GetNetPlayServer();
+  const auto server = Settings::Instance().GetNetPlayServer();
 
   if (server)
     server->AbortGameStart();
diff --git a/Source/Core/DolphinQt/NetPlay/GameDigestDialog.cpp b/Source/Core/DolphinQt/NetPlay/GameDigestDialog.cpp
index b8c92ff8b684..0329ca41c9b4 100644
--- a/Source/Core/DolphinQt/NetPlay/GameDigestDialog.cpp
+++ b/Source/Core/DolphinQt/NetPlay/GameDigestDialog.cpp
@@ -21,7 +21,7 @@
 static QString GetPlayerNameFromPID(int pid)
 {
   QString player_name = QObject::tr("Invalid Player ID");
-  auto client = Settings::Instance().GetNetPlayClient();
+  const auto client = Settings::Instance().GetNetPlayClient();
   if (!client)
     return player_name;
 
@@ -70,13 +70,13 @@ void GameDigestDialog::show(const QString& title)
 {
   m_progress_box->setTitle(title);
 
-  for (auto& pair : m_progress_bars)
+  for (const auto& pair : m_progress_bars)
   {
     m_progress_layout->removeWidget(pair.second);
     pair.second->deleteLater();
   }
 
-  for (auto& pair : m_status_labels)
+  for (const auto& pair : m_status_labels)
   {
     m_progress_layout->removeWidget(pair.second);
     pair.second->deleteLater();
@@ -87,7 +87,7 @@ void GameDigestDialog::show(const QString& title)
   m_results.clear();
   m_check_label->setText(QString::fromStdString(""));
 
-  auto client = Settings::Instance().GetNetPlayClient();
+  const auto client = Settings::Instance().GetNetPlayClient();
   if (!client)
     return;
 
@@ -142,7 +142,7 @@ void GameDigestDialog::SetResult(int pid, const std::string& result)
 
   m_results.push_back(result);
 
-  auto client = Settings::Instance().GetNetPlayClient();
+  const auto client = Settings::Instance().GetNetPlayClient();
   if (client && m_results.size() >= client->GetPlayers().size())
   {
     if (std::ranges::adjacent_find(m_results, std::ranges::not_equal_to{}) == m_results.end())
@@ -163,7 +163,7 @@ void GameDigestDialog::SetResult(int pid, const std::string& result)
 
 void GameDigestDialog::reject()
 {
-  auto server = Settings::Instance().GetNetPlayServer();
+  const auto server = Settings::Instance().GetNetPlayServer();
 
   if (server)
     server->AbortGameDigest();
diff --git a/Source/Core/DolphinQt/NetPlay/NetPlayBrowser.cpp b/Source/Core/DolphinQt/NetPlay/NetPlayBrowser.cpp
index d502e8943e25..ef753ef92f03 100644
--- a/Source/Core/DolphinQt/NetPlay/NetPlayBrowser.cpp
+++ b/Source/Core/DolphinQt/NetPlay/NetPlayBrowser.cpp
@@ -289,7 +289,7 @@ void NetPlayBrowser::accept()
 
   const int index = m_table_widget->selectedItems()[0]->row();
 
-  NetPlaySession& session = m_sessions[index];
+  const NetPlaySession& session = m_sessions[index];
 
   std::string server_id = session.server_id;
 
@@ -309,7 +309,7 @@ void NetPlayBrowser::accept()
 
     const std::string password = dialog.textValue().toStdString();
 
-    auto decrypted_id = session.DecryptID(password);
+    const auto decrypted_id = session.DecryptID(password);
 
     if (!decrypted_id)
     {
diff --git a/Source/Core/DolphinQt/NetPlay/NetPlayDialog.cpp b/Source/Core/DolphinQt/NetPlay/NetPlayDialog.cpp
index 2661b7ac94a7..ad9b5acf8655 100644
--- a/Source/Core/DolphinQt/NetPlay/NetPlayDialog.cpp
+++ b/Source/Core/DolphinQt/NetPlay/NetPlayDialog.cpp
@@ -113,7 +113,7 @@ NetPlayDialog::NetPlayDialog(const GameListModel& game_list_model,
   LoadSettings();
   ConnectWidgets();
 
-  auto& settings = Settings::Instance().GetQSettings();
+  const auto& settings = Settings::Instance().GetQSettings();
 
   restoreGeometry(settings.value(QStringLiteral("netplaydialog/geometry")).toByteArray());
   m_splitter->restoreState(settings.value(QStringLiteral("netplaydialog/splitter")).toByteArray());
@@ -330,12 +330,12 @@ void NetPlayDialog::ConnectWidgets()
       QApplication::clipboard()->setText(m_hostcode_label->text());
   });
   connect(m_players_list, &QTableWidget::itemSelectionChanged, [this] {
-    int row = m_players_list->currentRow();
+    const int row = m_players_list->currentRow();
     m_kick_button->setEnabled(row > 0 &&
                               !m_players_list->currentItem()->data(Qt::UserRole).isNull());
   });
   connect(m_kick_button, &QPushButton::clicked, [this] {
-    auto id = m_players_list->currentItem()->data(Qt::UserRole).toInt();
+    const auto id = m_players_list->currentItem()->data(Qt::UserRole).toInt();
     Settings::Instance().GetNetPlayServer()->KickPlayer(id);
   });
   connect(m_assign_ports_button, &QPushButton::clicked, [this] {
@@ -358,8 +358,8 @@ void NetPlayDialog::ConnectWidgets()
     if (value == m_buffer_size)
       return;
 
-    auto client = Settings::Instance().GetNetPlayClient();
-    auto server = Settings::Instance().GetNetPlayServer();
+    const auto client = Settings::Instance().GetNetPlayClient();
+    const auto server = Settings::Instance().GetNetPlayServer();
     if (server && !m_host_input_authority)
       server->AdjustPadBufferSize(value);
     else
@@ -369,7 +369,7 @@ void NetPlayDialog::ConnectWidgets()
   const auto hia_function = [this](bool enable) {
     if (m_host_input_authority != enable)
     {
-      auto server = Settings::Instance().GetNetPlayServer();
+      const auto server = Settings::Instance().GetNetPlayServer();
       if (server)
         server->SetHostInputAuthority(enable);
     }
@@ -442,7 +442,7 @@ void NetPlayDialog::SendMessage(const std::string& msg)
 void NetPlayDialog::OnChat()
 {
   QueueOnObject(this, [this] {
-    auto msg = m_chat_type_edit->text().toStdString();
+    const auto msg = m_chat_type_edit->text().toStdString();
 
     if (msg.empty())
       return;
@@ -516,7 +516,7 @@ void NetPlayDialog::show(std::string nickname, bool use_traversal)
   m_chat_edit->clear();
   m_chat_type_edit->clear();
 
-  bool is_hosting = Settings::Instance().GetNetPlayServer() != nullptr;
+  const bool is_hosting = Settings::Instance().GetNetPlayServer() != nullptr;
 
   if (is_hosting)
   {
@@ -616,8 +616,8 @@ void NetPlayDialog::UpdateDiscordPresence()
 
 void NetPlayDialog::UpdateGUI()
 {
-  auto client = Settings::Instance().GetNetPlayClient();
-  auto server = Settings::Instance().GetNetPlayServer();
+  const auto client = Settings::Instance().GetNetPlayClient();
+  const auto server = Settings::Instance().GetNetPlayServer();
   if (!client)
     return;
 
@@ -629,9 +629,9 @@ void NetPlayDialog::UpdateGUI()
 
   m_player_count = static_cast<int>(players.size());
 
-  int selection_pid = m_players_list->currentItem() ?
-                          m_players_list->currentItem()->data(Qt::UserRole).toInt() :
-                          -1;
+  const int selection_pid = m_players_list->currentItem() ?
+                                m_players_list->currentItem()->data(Qt::UserRole).toInt() :
+                                -1;
 
   m_players_list->clear();
   m_players_list->setHorizontalHeaderLabels(
@@ -803,7 +803,7 @@ void NetPlayDialog::DisplayMessage(const QString& msg, const std::string& color,
                             .arg(QString::fromStdString(color), msg.toHtmlEscaped()));
   });
 
-  QColor c(color.empty() ? QStringLiteral("white") : QString::fromStdString(color));
+  const QColor c(color.empty() ? QStringLiteral("white") : QString::fromStdString(color));
 
   if (Config::Get(Config::GFX_SHOW_NETPLAY_MESSAGES) &&
       Core::IsRunning(Core::System::GetInstance()))
@@ -886,11 +886,11 @@ void NetPlayDialog::OnMsgStartGame()
   }
 
   QueueOnObject(this, [this] {
-    auto client = Settings::Instance().GetNetPlayClient();
+    const auto client = Settings::Instance().GetNetPlayClient();
 
     if (client)
     {
-      if (auto game = FindGameFile(m_current_game_identifier))
+      if (const auto game = FindGameFile(m_current_game_identifier))
         client->StartGame(game->GetFilePath());
       else
         PanicAlertFmtT("Selected game doesn't exist in game list!");
@@ -1052,7 +1052,7 @@ void NetPlayDialog::OnTtlDetermined(u8 ttl)
 
 bool NetPlayDialog::IsRecording()
 {
-  std::optional<bool> is_recording = RunOnObject(m_record_input_action, &QAction::isChecked);
+  const std::optional<bool> is_recording = RunOnObject(m_record_input_action, &QAction::isChecked);
   if (is_recording)
     return *is_recording;
   return false;
@@ -1068,7 +1068,7 @@ NetPlayDialog::FindGameFile(const NetPlay::SyncIdentifier& sync_identifier,
 
   *found = NetPlay::SyncIdentifierComparison::DifferentGame;
 
-  std::optional<std::shared_ptr<const UICommon::GameFile>> game_file =
+  const std::optional<std::shared_ptr<const UICommon::GameFile>> game_file =
       RunOnObject(this, [this, &sync_identifier, found] {
         for (int i = 0; i < m_game_list_model.rowCount(QModelIndex()); i++)
         {
@@ -1088,7 +1088,7 @@ std::string NetPlayDialog::FindGBARomPath(const std::array<u8, 20>& hash, std::s
                                           int device_number)
 {
 #ifdef HAS_LIBMGBA
-  auto result = RunOnObject(this, [&, this] {
+  const auto result = RunOnObject(this, [&, this] {
     std::string rom_path;
     std::array<u8, 20> rom_hash;
     std::string rom_title;
@@ -1279,7 +1279,7 @@ void NetPlayDialog::SetChunkedProgress(const int pid, const u64 progress)
 
 void NetPlayDialog::SetHostWiiSyncData(std::vector<u64> titles, std::string redirect_folder)
 {
-  auto client = Settings::Instance().GetNetPlayClient();
+  const auto client = Settings::Instance().GetNetPlayClient();
   if (client)
     client->SetWiiSyncData(nullptr, std::move(titles), std::move(redirect_folder));
 }
diff --git a/Source/Core/DolphinQt/NetPlay/NetPlaySetupDialog.cpp b/Source/Core/DolphinQt/NetPlay/NetPlaySetupDialog.cpp
index f99a493a7761..8791cb9e924a 100644
--- a/Source/Core/DolphinQt/NetPlay/NetPlaySetupDialog.cpp
+++ b/Source/Core/DolphinQt/NetPlay/NetPlaySetupDialog.cpp
@@ -36,19 +36,19 @@ NetPlaySetupDialog::NetPlaySetupDialog(const GameListModel& game_list_model, QWi
 
   CreateMainLayout();
 
-  bool use_index = Config::Get(Config::NETPLAY_USE_INDEX);
-  std::string index_region = Config::Get(Config::NETPLAY_INDEX_REGION);
-  std::string index_name = Config::Get(Config::NETPLAY_INDEX_NAME);
-  std::string index_password = Config::Get(Config::NETPLAY_INDEX_PASSWORD);
-  std::string nickname = Config::Get(Config::NETPLAY_NICKNAME);
-  std::string traversal_choice = Config::Get(Config::NETPLAY_TRAVERSAL_CHOICE);
-  int connect_port = Config::Get(Config::NETPLAY_CONNECT_PORT);
-  int host_port = Config::Get(Config::NETPLAY_HOST_PORT);
-  int host_listen_port = Config::Get(Config::NETPLAY_LISTEN_PORT);
-  bool enable_chunked_upload_limit = Config::Get(Config::NETPLAY_ENABLE_CHUNKED_UPLOAD_LIMIT);
-  u32 chunked_upload_limit = Config::Get(Config::NETPLAY_CHUNKED_UPLOAD_LIMIT);
+  const bool use_index = Config::Get(Config::NETPLAY_USE_INDEX);
+  const std::string index_region = Config::Get(Config::NETPLAY_INDEX_REGION);
+  const std::string index_name = Config::Get(Config::NETPLAY_INDEX_NAME);
+  const std::string index_password = Config::Get(Config::NETPLAY_INDEX_PASSWORD);
+  const std::string nickname = Config::Get(Config::NETPLAY_NICKNAME);
+  const std::string traversal_choice = Config::Get(Config::NETPLAY_TRAVERSAL_CHOICE);
+  const int connect_port = Config::Get(Config::NETPLAY_CONNECT_PORT);
+  const int host_port = Config::Get(Config::NETPLAY_HOST_PORT);
+  const int host_listen_port = Config::Get(Config::NETPLAY_LISTEN_PORT);
+  const bool enable_chunked_upload_limit = Config::Get(Config::NETPLAY_ENABLE_CHUNKED_UPLOAD_LIMIT);
+  const u32 chunked_upload_limit = Config::Get(Config::NETPLAY_CHUNKED_UPLOAD_LIMIT);
 #ifdef USE_UPNP
-  bool use_upnp = Config::Get(Config::NETPLAY_USE_UPNP);
+  const bool use_upnp = Config::Get(Config::NETPLAY_USE_UPNP);
 
   m_host_upnp->setChecked(use_upnp);
 #endif
@@ -305,7 +305,7 @@ void NetPlaySetupDialog::OnConnectionTypeChanged(int index)
 
   m_reset_traversal_button->setHidden(index == 0);
 
-  std::string address =
+  const std::string address =
       index == 0 ? Config::Get(Config::NETPLAY_ADDRESS) : Config::Get(Config::NETPLAY_HOST_CODE);
 
   m_ip_label->setText(index == 0 ? tr("IP Address:") : tr("Host Code:"));
diff --git a/Source/Core/DolphinQt/NetPlay/PadMappingDialog.cpp b/Source/Core/DolphinQt/NetPlay/PadMappingDialog.cpp
index 35946d8f6d9f..fa4bdf43a6df 100644
--- a/Source/Core/DolphinQt/NetPlay/PadMappingDialog.cpp
+++ b/Source/Core/DolphinQt/NetPlay/PadMappingDialog.cpp
@@ -67,8 +67,8 @@ void PadMappingDialog::ConnectWidgets()
 
 int PadMappingDialog::exec()
 {
-  auto client = Settings::Instance().GetNetPlayClient();
-  auto server = Settings::Instance().GetNetPlayServer();
+  const auto client = Settings::Instance().GetNetPlayClient();
+  const auto server = Settings::Instance().GetNetPlayServer();
   // Load Settings
   m_players = client->GetPlayers();
   m_pad_mapping = server->GetPadMapping();
@@ -87,7 +87,7 @@ int PadMappingDialog::exec()
 
   for (auto& combo_group : {m_gc_boxes, m_wii_boxes})
   {
-    bool gc = combo_group == m_gc_boxes;
+    const bool gc = combo_group == m_gc_boxes;
     for (size_t i = 0; i < combo_group.size(); i++)
     {
       auto& combo = combo_group[i];
@@ -131,8 +131,8 @@ void PadMappingDialog::OnMappingChanged()
 {
   for (unsigned int i = 0; i < m_wii_boxes.size(); i++)
   {
-    int gc_id = m_gc_boxes[i]->currentIndex();
-    int wii_id = m_wii_boxes[i]->currentIndex();
+    const int gc_id = m_gc_boxes[i]->currentIndex();
+    const int wii_id = m_wii_boxes[i]->currentIndex();
 
     m_pad_mapping[i] = gc_id > 0 ? m_players[gc_id - 1]->pid : 0;
     m_gba_config[i].enabled = m_gba_boxes[i]->isChecked();