diff --git a/x-pack/plugins/data_enhanced/public/autocomplete/providers/kql_query_suggestion/lib/escape_kuery.test.ts b/x-pack/plugins/data_enhanced/public/autocomplete/providers/kql_query_suggestion/lib/escape_kuery.test.ts
index a4a1d977a207f..906319865c21f 100644
--- a/x-pack/plugins/data_enhanced/public/autocomplete/providers/kql_query_suggestion/lib/escape_kuery.test.ts
+++ b/x-pack/plugins/data_enhanced/public/autocomplete/providers/kql_query_suggestion/lib/escape_kuery.test.ts
@@ -14,6 +14,13 @@ describe('Kuery escape', () => {
     expect(escapeQuotes(value)).toBe(expected);
   });
 
+  test('should escape backslashes and quotes', () => {
+    const value = 'Backslashes \\" in the middle and ends with quotes \\"';
+    const expected = 'Backslashes \\\\\\" in the middle and ends with quotes \\\\\\"';
+
+    expect(escapeQuotes(value)).toBe(expected);
+  });
+
   test('should escape special characters', () => {
     const value = `This \\ has (a lot of) <special> characters, don't you *think*? "Yes."`;
     const expected = `This \\\\ has \\(a lot of\\) \\<special\\> characters, don't you \\*think\\*? \\"Yes.\\"`;
diff --git a/x-pack/plugins/data_enhanced/public/autocomplete/providers/kql_query_suggestion/lib/escape_kuery.ts b/x-pack/plugins/data_enhanced/public/autocomplete/providers/kql_query_suggestion/lib/escape_kuery.ts
index 2ddb3966bb560..6ccf8f577fbec 100644
--- a/x-pack/plugins/data_enhanced/public/autocomplete/providers/kql_query_suggestion/lib/escape_kuery.ts
+++ b/x-pack/plugins/data_enhanced/public/autocomplete/providers/kql_query_suggestion/lib/escape_kuery.ts
@@ -6,8 +6,12 @@
 
 import { flow } from 'lodash';
 
+/**
+ * Escapes backslashes and double-quotes. (Useful when putting a string in quotes to use as a value
+ * in a KQL expression. See the QuotedCharacter rule in kuery.peg.)
+ */
 export function escapeQuotes(str: string) {
-  return str.replace(/"/g, '\\"');
+  return str.replace(/[\\"]/g, '\\$&');
 }
 
 export const escapeKuery = flow(escapeSpecialCharacters, escapeAndOr, escapeNot, escapeWhitespace);