diff --git a/Source/Core/Core/HW/DVD/DVDInterface.cpp b/Source/Core/Core/HW/DVD/DVDInterface.cpp
index 2ea86942da..ee02b90533 100644
--- a/Source/Core/Core/HW/DVD/DVDInterface.cpp
+++ b/Source/Core/Core/HW/DVD/DVDInterface.cpp
@@ -349,8 +349,8 @@ static void DTKStreamingCallback(const std::vector<u8>& audio_data, s64 cycles_l
 
   // Determine which audio data to read next.
   static const int MAXIMUM_SAMPLES = 48000 / 2000 * 7;  // 3.5ms of 48kHz samples
-  u64 read_offset;
-  u32 read_length;
+  u64 read_offset = 0;
+  u32 read_length = 0;
   if (s_stream && AudioInterface::IsPlaying())
   {
     read_offset = s_audio_position;
diff --git a/Source/Core/Core/IOS/USB/Bluetooth/BTReal.cpp b/Source/Core/Core/IOS/USB/Bluetooth/BTReal.cpp
index caf3136ff4..d3aa66fc7c 100644
--- a/Source/Core/Core/IOS/USB/Bluetooth/BTReal.cpp
+++ b/Source/Core/Core/IOS/USB/Bluetooth/BTReal.cpp
@@ -533,7 +533,7 @@ void BluetoothReal::LoadLinkKeys()
     std::reverse(address.begin(), address.end());
 
     const std::string& key_string = pair.substr(index + 1);
-    linkkey_t key;
+    linkkey_t key{};
     size_t pos = 0;
     for (size_t i = 0; i < key_string.length(); i = i + 2)
     {
diff --git a/Source/Core/Core/PowerPC/Jit64/Jit_LoadStore.cpp b/Source/Core/Core/PowerPC/Jit64/Jit_LoadStore.cpp
index 1d34bf4796..fc6e1f262a 100644
--- a/Source/Core/Core/PowerPC/Jit64/Jit_LoadStore.cpp
+++ b/Source/Core/Core/PowerPC/Jit64/Jit_LoadStore.cpp
@@ -202,7 +202,7 @@ void Jit64::lXXx(UGeckoInstruction inst)
       // If we're using reg+reg mode and b is an immediate, pretend we're using constant offset mode
       bool use_constant_offset = inst.OPCD != 31 || gpr.R(b).IsImm();
 
-      s32 offset;
+      s32 offset = 0;
       if (use_constant_offset)
         offset = inst.OPCD == 31 ? gpr.R(b).SImm32() : (s32)inst.SIMM_16;
       // Depending on whether we have an immediate and/or update, find the optimum way to calculate
diff --git a/Source/Core/DolphinWX/Debugger/MemoryCheckDlg.cpp b/Source/Core/DolphinWX/Debugger/MemoryCheckDlg.cpp
index 6d6b1450e7..ac870c8804 100644
--- a/Source/Core/DolphinWX/Debugger/MemoryCheckDlg.cpp
+++ b/Source/Core/DolphinWX/Debugger/MemoryCheckDlg.cpp
@@ -154,7 +154,7 @@ void MemoryCheckDlg::OnOK(wxCommandEvent& event)
   bool Log = m_radioLog->GetValue() || m_radioBreakLog->GetValue();
   bool Break = m_radioBreak->GetValue() || m_radioBreakLog->GetValue();
 
-  u32 StartAddress, EndAddress;
+  u32 StartAddress = UINT32_MAX, EndAddress = 0;
   bool EndAddressOK =
       EndAddressString.Len() && AsciiToHex(WxStrToStr(EndAddressString), EndAddress);