diff --git a/alts/src/main/java/io/grpc/alts/internal/AltsTsiHandshaker.java b/alts/src/main/java/io/grpc/alts/internal/AltsTsiHandshaker.java
index 007db9e1eed..2d6c322c1b1 100644
--- a/alts/src/main/java/io/grpc/alts/internal/AltsTsiHandshaker.java
+++ b/alts/src/main/java/io/grpc/alts/internal/AltsTsiHandshaker.java
@@ -80,7 +80,7 @@ public boolean processBytesFromPeer(ByteBuffer bytes) throws GeneralSecurityExce
       return true;
     }
     int remaining = bytes.remaining();
-    // Call handshaker service to proceess the bytes.
+    // Call handshaker service to process the bytes.
     if (outputFrame == null) {
       checkState(!isClient, "Client handshaker should not process any frame at the beginning.");
       outputFrame = handshaker.startServerHandshake(bytes);
diff --git a/services/src/main/proto/grpc/binlog/v1/binarylog.proto b/services/src/main/proto/grpc/binlog/v1/binarylog.proto
index 9ed1733e2d8..b18bd88ddc9 100644
--- a/services/src/main/proto/grpc/binlog/v1/binarylog.proto
+++ b/services/src/main/proto/grpc/binlog/v1/binarylog.proto
@@ -120,7 +120,7 @@ message ClientHeader {
 
   // A single process may be used to run multiple virtual
   // servers with different identities.
-  // The authority is the name of such a server identitiy.
+  // The authority is the name of such a server identity.
   // It is typically a portion of the URI in the form of
   // <host> or <host>:<port> .
   string authority = 3;
diff --git a/services/src/main/proto/grpc/reflection/v1alpha/reflection.proto b/services/src/main/proto/grpc/reflection/v1alpha/reflection.proto
index 8c5e06fe148..a3984b55c2d 100644
--- a/services/src/main/proto/grpc/reflection/v1alpha/reflection.proto
+++ b/services/src/main/proto/grpc/reflection/v1alpha/reflection.proto
@@ -80,7 +80,7 @@ message ExtensionRequest {
 message ServerReflectionResponse {
   string valid_host = 1;
   ServerReflectionRequest original_request = 2;
-  // The server set one of the following fields accroding to the message_request
+  // The server set one of the following fields according to the message_request
   // in the request.
   oneof message_response {
     // This message is used to answer file_by_filename, file_containing_symbol,
@@ -91,7 +91,7 @@ message ServerReflectionResponse {
     // that were previously sent in response to earlier requests in the stream.
     FileDescriptorResponse file_descriptor_response = 4;
 
-    // This message is used to answer all_extension_numbers_of_type requst.
+    // This message is used to answer all_extension_numbers_of_type request.
     ExtensionNumberResponse all_extension_numbers_response = 5;
 
     // This message is used to answer list_services request.