diff --git a/clang/lib/Driver/ToolChains/NetBSD.h b/clang/lib/Driver/ToolChains/NetBSD.h
--- a/clang/lib/Driver/ToolChains/NetBSD.h
+++ b/clang/lib/Driver/ToolChains/NetBSD.h
@@ -58,6 +58,9 @@
 
   CXXStdlibType GetDefaultCXXStdlibType() const override;
 
+  void
+  AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs,
+                            llvm::opt::ArgStringList &CC1Args) const override;
   void addLibCxxIncludePaths(
       const llvm::opt::ArgList &DriverArgs,
       llvm::opt::ArgStringList &CC1Args) const override;
diff --git a/clang/lib/Driver/ToolChains/NetBSD.cpp b/clang/lib/Driver/ToolChains/NetBSD.cpp
--- a/clang/lib/Driver/ToolChains/NetBSD.cpp
+++ b/clang/lib/Driver/ToolChains/NetBSD.cpp
@@ -11,6 +11,7 @@
 #include "Arch/Mips.h"
 #include "Arch/Sparc.h"
 #include "CommonArgs.h"
+#include "clang/Config/config.h"
 #include "clang/Driver/Compilation.h"
 #include "clang/Driver/Driver.h"
 #include "clang/Driver/Options.h"
@@ -435,6 +436,40 @@
   return ToolChain::CST_Libstdcxx;
 }
 
+void NetBSD::AddClangSystemIncludeArgs(
+    const llvm::opt::ArgList &DriverArgs,
+    llvm::opt::ArgStringList &CC1Args) const {
+  const Driver &D = getDriver();
+
+  if (DriverArgs.hasArg(clang::driver::options::OPT_nostdinc))
+    return;
+
+  if (!DriverArgs.hasArg(options::OPT_nobuiltininc)) {
+    SmallString<128> Dir(D.ResourceDir);
+    llvm::sys::path::append(Dir, "include");
+    addSystemInclude(DriverArgs, CC1Args, Dir.str());
+  }
+
+  if (DriverArgs.hasArg(options::OPT_nostdlibinc))
+    return;
+
+  // Check for configure-time C include directories.
+  StringRef CIncludeDirs(C_INCLUDE_DIRS);
+  if (CIncludeDirs != "") {
+    SmallVector<StringRef, 5> dirs;
+    CIncludeDirs.split(dirs, ":");
+    for (StringRef dir : dirs) {
+      StringRef Prefix =
+          llvm::sys::path::is_absolute(dir) ? StringRef(D.SysRoot) : "";
+      addExternCSystemInclude(DriverArgs, CC1Args, Prefix + dir);
+    }
+    return;
+  }
+
+  addExternCSystemInclude(DriverArgs, CC1Args,
+                          concat(D.SysRoot, "/usr/include"));
+}
+
 void NetBSD::addLibCxxIncludePaths(const llvm::opt::ArgList &DriverArgs,
                                    llvm::opt::ArgStringList &CC1Args) const {
   const std::string Candidates[] = {
diff --git a/clang/lib/Lex/InitHeaderSearch.cpp b/clang/lib/Lex/InitHeaderSearch.cpp
--- a/clang/lib/Lex/InitHeaderSearch.cpp
+++ b/clang/lib/Lex/InitHeaderSearch.cpp
@@ -231,7 +231,6 @@
   if (HSOpts.UseStandardSystemIncludes) {
     switch (os) {
     case llvm::Triple::CloudABI:
-    case llvm::Triple::NetBSD:
     case llvm::Triple::NaCl:
     case llvm::Triple::PS4:
     case llvm::Triple::PS5:
@@ -412,9 +411,10 @@
   case llvm::Triple::AIX:
   case llvm::Triple::Emscripten:
   case llvm::Triple::FreeBSD:
+  case llvm::Triple::NetBSD:
+  case llvm::Triple::OpenBSD:
   case llvm::Triple::Hurd:
   case llvm::Triple::Linux:
-  case llvm::Triple::OpenBSD:
   case llvm::Triple::Solaris:
   case llvm::Triple::WASI:
     return false;
diff --git a/clang/test/Driver/netbsd.c b/clang/test/Driver/netbsd.c
--- a/clang/test/Driver/netbsd.c
+++ b/clang/test/Driver/netbsd.c
@@ -477,3 +477,10 @@
 // RELOCATABLE-NOT: "-dynamic-linker"
 // RELOCATABLE-NOT: "-l
 // RELOCATABLE-NOT: crt{{[^./\\]+}}.o
+
+// Check that the driver passes include paths to cc1 on NetBSD.
+// RUN: %clang -### %s --target=x86_64-unknown-netbsd -r 2>&1 \
+// RUN:   | FileCheck %s --check-prefix=DRIVER-PASS-INCLUDES
+// DRIVER-PASS-INCLUDES:      "-cc1" {{.*}}"-resource-dir" "[[RESOURCE:[^"]+]]"
+// DRIVER-PASS-INCLUDES-SAME: {{^}} "-internal-isystem" "[[RESOURCE]]{{/|\\\\}}include"
+// DRIVER-PASS-INCLUDES-SAME: {{^}} "-internal-externc-isystem" "/usr/include"
diff --git a/clang/test/Driver/netbsd.cpp b/clang/test/Driver/netbsd.cpp
--- a/clang/test/Driver/netbsd.cpp
+++ b/clang/test/Driver/netbsd.cpp
@@ -339,3 +339,11 @@
 // S-POWERPC64: "{{.*}}/usr/lib{{/|\\\\}}crti.o"
 // S-POWERPC64: "{{.*}}/usr/lib{{/|\\\\}}crtbegin.o" "{{.*}}.o" "-lc++"
 // S-POWERPC64: "-lm" "-lc" "{{.*}}/usr/lib{{/|\\\\}}crtend.o" "{{.*}}/usr/lib{{/|\\\\}}crtn.o"
+
+// Check that the driver passes include paths to cc1 on NetBSD.
+// RUN: %clang -### %s --target=x86_64-unknown-netbsd -r 2>&1 \
+// RUN:   | FileCheck %s --check-prefix=DRIVER-PASS-INCLUDES
+// DRIVER-PASS-INCLUDES:      "-cc1" {{.*}}"-resource-dir" "[[RESOURCE:[^"]+]]"
+// DRIVER-PASS-INCLUDES-SAME: {{^}} "-internal-isystem" "/usr/include/c++/v1"
+// DRIVER-PASS-INCLUDES-SAME: {{^}} "-internal-isystem" "[[RESOURCE]]{{/|\\\\}}include"
+// DRIVER-PASS-INCLUDES-SAME: {{^}} "-internal-externc-isystem" "/usr/include"