diff --git a/src/core/ext/transport/chttp2/transport/hpack_parser.cc b/src/core/ext/transport/chttp2/transport/hpack_parser.cc
index cb17759bba..a3c3598430 100644
--- a/src/core/ext/transport/chttp2/transport/hpack_parser.cc
+++ b/src/core/ext/transport/chttp2/transport/hpack_parser.cc
@@ -1032,7 +1032,7 @@ class HPackParser::Parser {
 
  private:
   void GPR_ATTRIBUTE_NOINLINE LogHeader(const HPackTable::Memento& memento) {
-    const char* type;
+    const char* type = nullptr;
     switch (log_info_.type) {
       case LogInfo::kHeaders:
         type = "HDR";
diff --git a/src/core/lib/slice/slice.cc b/src/core/lib/slice/slice.cc
index 2e78b4de9e..77e88cab70 100644
--- a/src/core/lib/slice/slice.cc
+++ b/src/core/lib/slice/slice.cc
@@ -181,6 +181,7 @@ grpc_slice grpc_slice_from_moved_buffer(grpc_core::UniquePtr<char> p,
                                         size_t len) {
   uint8_t* ptr = reinterpret_cast<uint8_t*>(p.get());
   grpc_slice slice;
+  memset(&slice, 0, sizeof(grpc_slice));
   if (len <= sizeof(slice.data.inlined.bytes)) {
     slice.refcount = nullptr;
     slice.data.inlined.length = len;
@@ -199,7 +200,7 @@ grpc_slice grpc_slice_from_moved_string(grpc_core::UniquePtr<char> p) {
 }
 
 grpc_slice grpc_slice_from_cpp_string(std::string str) {
-  grpc_slice slice;
+  grpc_slice slice = { 0 };
   if (str.size() <= sizeof(slice.data.inlined.bytes)) {
     slice.refcount = nullptr;
     slice.data.inlined.length = str.size();
diff --git a/src/core/lib/surface/server.cc b/src/core/lib/surface/server.cc
index 4c0220837e..bb5a367107 100644
--- a/src/core/lib/surface/server.cc
+++ b/src/core/lib/surface/server.cc
@@ -902,7 +902,7 @@ grpc_call_error Server::QueueRequestedCall(size_t cq_idx, RequestedCall* rc) {
              GRPC_ERROR_CREATE_FROM_STATIC_STRING("Server Shutdown"));
     return GRPC_CALL_OK;
   }
-  RequestMatcherInterface* rm;
+  RequestMatcherInterface* rm = nullptr;
   switch (rc->type) {
     case RequestedCall::Type::BATCH_CALL:
       rm = unregistered_request_matcher_.get();