diff --git a/docs/reference.md b/docs/reference.md
index fb886f5..feabe8e 100644
--- a/docs/reference.md
+++ b/docs/reference.md
@@ -151,6 +151,7 @@
     *   [public_deps: [label list] Declare public dependencies.](#var_public_deps)
     *   [rebase: [boolean] Rebase collected metadata as files.](#var_rebase)
     *   [response_file_contents: [string list] Contents of .rsp file for actions.](#var_response_file_contents)
+    *   [rustflags: [string list] Flags passed to the Rust compiler.](#var_rustflags)
     *   [script: [file name] Script file for actions.](#var_script)
     *   [sources: [file list] Source files for a target.](#var_sources)
     *   [swiftflags: [string list] Flags passed to the swift compiler.](#var_swiftflags)
@@ -5093,8 +5094,8 @@
   versions of cflags* will be appended on the compiler command line after
   "cflags".
 
-  See also "asmflags" for flags for assembly-language files and "swiftflags"
-  for swift files.
+  See also "asmflags" for flags for assembly-language files, "swiftflags" for
+  swift files, and "rustflags" for Rust files.
 ```
 
 #### **Ordering of flags and values**
@@ -5127,8 +5128,8 @@
   versions of cflags* will be appended on the compiler command line after
   "cflags".
 
-  See also "asmflags" for flags for assembly-language files and "swiftflags"
-  for swift files.
+  See also "asmflags" for flags for assembly-language files, "swiftflags" for
+  swift files, and "rustflags" for Rust files.
 ```
 
 #### **Ordering of flags and values**
@@ -5161,8 +5162,8 @@
   versions of cflags* will be appended on the compiler command line after
   "cflags".
 
-  See also "asmflags" for flags for assembly-language files and "swiftflags"
-  for swift files.
+  See also "asmflags" for flags for assembly-language files, "swiftflags" for
+  swift files, and "rustflags" for Rust files.
 ```
 
 #### **Ordering of flags and values**
@@ -5195,8 +5196,8 @@
   versions of cflags* will be appended on the compiler command line after
   "cflags".
 
-  See also "asmflags" for flags for assembly-language files and "swiftflags"
-  for swift files.
+  See also "asmflags" for flags for assembly-language files, "swiftflags" for
+  swift files, and "rustflags" for Rust files.
 ```
 
 #### **Ordering of flags and values**
@@ -5229,8 +5230,8 @@
   versions of cflags* will be appended on the compiler command line after
   "cflags".
 
-  See also "asmflags" for flags for assembly-language files and "swiftflags"
-  for swift files.
+  See also "asmflags" for flags for assembly-language files, "swiftflags" for
+  swift files, and "rustflags" for Rust files.
 ```
 
 #### **Ordering of flags and values**
@@ -6620,6 +6621,13 @@
     ]
   }
 ```
+### <a name="var_rustflags"></a>**rustflags**: Flags passed to the Rust compiler.
+
+```
+  A list of strings.
+
+  "rustflags" are passed to all invocations of the Rust compiler.
+```
 ### <a name="var_script"></a>**script**: Script file for actions.
 
 ```
diff --git a/src/gn/command_desc.cc b/src/gn/command_desc.cc
index 99f7e45..95652f1 100644
--- a/src/gn/command_desc.cc
+++ b/src/gn/command_desc.cc
@@ -306,6 +306,7 @@
           {variables::kWriteOutputConversion, DefaultHandler},
           {variables::kRustCrateName, DefaultHandler},
           {variables::kRustCrateRoot, DefaultHandler},
+          {variables::kRustflags, DefaultHandler},
           {variables::kSwiftModuleName, DefaultHandler},
           {variables::kSwiftBridgeHeader, DefaultHandler},
           {variables::kMnemonic, DefaultHandler},
@@ -399,6 +400,7 @@
   HandleProperty(variables::kLibDirs, handler_map, v, dict);
   HandleProperty(variables::kDataKeys, handler_map, v, dict);
   HandleProperty(variables::kRebase, handler_map, v, dict);
+  HandleProperty(variables::kRustflags, handler_map, v, dict);
   HandleProperty(variables::kWalkKeys, handler_map, v, dict);
   HandleProperty(variables::kWeakFrameworks, handler_map, v, dict);
   HandleProperty(variables::kWriteOutputConversion, handler_map, v, dict);
@@ -463,6 +465,7 @@
   HandleProperty(variables::kLibDirs, handler_map, v, dict);
   HandleProperty(variables::kPrecompiledHeader, handler_map, v, dict);
   HandleProperty(variables::kPrecompiledSource, handler_map, v, dict);
+  HandleProperty(variables::kRustflags, handler_map, v, dict);
   HandleProperty(variables::kWeakFrameworks, handler_map, v, dict);
 
 #undef HandleProperty
diff --git a/src/gn/desc_builder.cc b/src/gn/desc_builder.cc
index 58bebef..093cad9 100644
--- a/src/gn/desc_builder.cc
+++ b/src/gn/desc_builder.cc
@@ -282,6 +282,7 @@
     CONFIG_VALUE_ARRAY_HANDLER(ldflags, std::string)
     CONFIG_VALUE_ARRAY_HANDLER(lib_dirs, SourceDir)
     CONFIG_VALUE_ARRAY_HANDLER(libs, LibFile)
+    CONFIG_VALUE_ARRAY_HANDLER(rustflags, std::string)
     CONFIG_VALUE_ARRAY_HANDLER(swiftflags, std::string)
 
 #undef CONFIG_VALUE_ARRAY_HANDLER
diff --git a/src/gn/rust_variables.cc b/src/gn/rust_variables.cc
index 651eb07..7474286 100644
--- a/src/gn/rust_variables.cc
+++ b/src/gn/rust_variables.cc
@@ -95,6 +95,17 @@
   only one file.
 )";
 
+const char kRustflags[] = "rustflags";
+const char kRustflags_HelpShort[] =
+    "rustflags: [string list] Flags passed to the Rust compiler.";
+const char kRustflags_Help[] =
+      R"(rustflags: Flags passed to the Rust compiler.
+
+  A list of strings.
+
+  "rustflags" are passed to all invocations of the Rust compiler.
+)";
+
 void InsertRustVariables(VariableInfoMap* info_map) {
   info_map->insert(std::make_pair(
       kRustAliasedDeps,
@@ -108,6 +119,9 @@
   info_map->insert(std::make_pair(
       kRustCrateRoot,
       VariableInfo(kRustCrateRoot_HelpShort, kRustCrateRoot_Help)));
+  info_map->insert(std::make_pair(
+      kRustflags,
+      VariableInfo(kRustflags_HelpShort, kRustflags_Help)));
 }
 
 }  // namespace variables
diff --git a/src/gn/rust_variables.h b/src/gn/rust_variables.h
index ea2da6d..bade18d 100644
--- a/src/gn/rust_variables.h
+++ b/src/gn/rust_variables.h
@@ -31,8 +31,12 @@
 extern const char kRustEdition_HelpShort[];
 extern const char kRustEdition_Help[];
 
+extern const char kRustflags[];
+extern const char kRustflags_HelpShort[];
+extern const char kRustflags_Help[];
+
 void InsertRustVariables(VariableInfoMap* info_map);
 
 }  // namespace variables
 
-#endif  // TOOLS_GN_RUST_VARIABLES_H_
\ No newline at end of file
+#endif  // TOOLS_GN_RUST_VARIABLES_H_
diff --git a/src/gn/variables.cc b/src/gn/variables.cc
index 9cc3398..4949929 100644
--- a/src/gn/variables.cc
+++ b/src/gn/variables.cc
@@ -788,8 +788,8 @@
   versions of cflags* will be appended on the compiler command line after
   "cflags".
 
-  See also "asmflags" for flags for assembly-language files and "swiftflags"
-  for swift files.
+  See also "asmflags" for flags for assembly-language files, "swiftflags" for
+  swift files, and "rustflags" for Rust files.
 )" COMMON_ORDERING_HELP;
 const char* kCflags_Help = kCommonCflagsHelp;