diff --git a/lib/ClangImporter/ImportName.cpp b/lib/ClangImporter/ImportName.cpp
index afc0227e590d9..57dac3fdbbcab 100644
--- a/lib/ClangImporter/ImportName.cpp
+++ b/lib/ClangImporter/ImportName.cpp
@@ -1964,6 +1964,7 @@ ImportedName NameImporter::importNameImpl(const clang::NamedDecl *D,
     case clang::OverloadedOperatorKind::OO_Caret:
     case clang::OverloadedOperatorKind::OO_Amp:
     case clang::OverloadedOperatorKind::OO_Pipe:
+    case clang::OverloadedOperatorKind::OO_Tilde:
     case clang::OverloadedOperatorKind::OO_Exclaim:
     case clang::OverloadedOperatorKind::OO_Less:
     case clang::OverloadedOperatorKind::OO_Greater:
diff --git a/test/Interop/Cxx/operators/Inputs/non-member-inline.h b/test/Interop/Cxx/operators/Inputs/non-member-inline.h
index 04109aae4f58f..3ccdc94c579bf 100644
--- a/test/Interop/Cxx/operators/Inputs/non-member-inline.h
+++ b/test/Interop/Cxx/operators/Inputs/non-member-inline.h
@@ -29,6 +29,10 @@ inline LoadableIntWrapper operator^(LoadableIntWrapper lhs, LoadableIntWrapper r
   return LoadableIntWrapper{.value = lhs.value ^ rhs.value};
 }
 
+inline LoadableIntWrapper operator~(LoadableIntWrapper lhs) {
+  return LoadableIntWrapper{.value = ~lhs.value};
+}
+
 inline LoadableIntWrapper operator&(LoadableIntWrapper lhs, LoadableIntWrapper rhs) {
   return LoadableIntWrapper{.value = lhs.value & rhs.value};
 }
diff --git a/test/Interop/Cxx/operators/non-member-inline-module-interface.swift b/test/Interop/Cxx/operators/non-member-inline-module-interface.swift
index 222fb5adaf439..a3f11826642b2 100644
--- a/test/Interop/Cxx/operators/non-member-inline-module-interface.swift
+++ b/test/Interop/Cxx/operators/non-member-inline-module-interface.swift
@@ -6,6 +6,7 @@
 // CHECK-NEXT: func / (lhs: LoadableIntWrapper, rhs: LoadableIntWrapper) -> LoadableIntWrapper
 // CHECK-NEXT: func % (lhs: LoadableIntWrapper, rhs: LoadableIntWrapper) -> LoadableIntWrapper
 // CHECK-NEXT: func ^ (lhs: LoadableIntWrapper, rhs: LoadableIntWrapper) -> LoadableIntWrapper
+// CHECK-NEXT: func ~ (lhs: LoadableIntWrapper) -> LoadableIntWrapper
 // CHECK-NEXT: func & (lhs: LoadableIntWrapper, rhs: LoadableIntWrapper) -> LoadableIntWrapper
 // CHECK-NEXT: func | (lhs: LoadableIntWrapper, rhs: LoadableIntWrapper) -> LoadableIntWrapper
 // CHECK-NEXT: func << (lhs: LoadableIntWrapper, rhs: LoadableIntWrapper) -> LoadableIntWrapper
diff --git a/test/Interop/Cxx/operators/non-member-inline.swift b/test/Interop/Cxx/operators/non-member-inline.swift
index ee763941b7078..1132ff1728ce0 100644
--- a/test/Interop/Cxx/operators/non-member-inline.swift
+++ b/test/Interop/Cxx/operators/non-member-inline.swift
@@ -52,6 +52,14 @@ OperatorsTestSuite.test("caret (^)") {
   expectEqual(61, result.value)
 }
 
+OperatorsTestSuite.test("tilde (~)") {
+  let lhs = LoadableIntWrapper(value: 42)
+
+  let result = ~lhs
+
+  expectEqual(-43, result.value)
+}
+
 OperatorsTestSuite.test("percent (%)") {
   let lhs = LoadableIntWrapper(value: 11)
   let rhs = LoadableIntWrapper(value: 2)