diff --git a/src/index.d.ts b/src/index.d.ts
index c466759cf9..5708015113 100644
--- a/src/index.d.ts
+++ b/src/index.d.ts
@@ -1093,6 +1093,16 @@ declare namespace RamdaAdjunct {
          */
         async(generatorFn: Function): Function;
 
+        /**
+         * Replace all substring matches in a string with a replacement.
+         */
+        replaceAll(searchValue: string, replaceValue: string, str: string): string;
+        replaceAll(searchValue: string): (replaceValue: string, str: string) => string;
+        replaceAll(searchValue: string): {
+            (replaceValue: string, str: string): string;
+            (replaceValue: string): (str: string) => string;
+        };
+
          /**
           * Identity type.
           */
diff --git a/src/index.js b/src/index.js
index c3beb924d0..d651e4352d 100644
--- a/src/index.js
+++ b/src/index.js
@@ -169,5 +169,7 @@ export { default as ceil } from './ceil';
 export { default as floor } from './floor';
 export { default as trunc } from './trunc';
 export { default as sign } from './sign';
+// String
+export { default as replaceAll } from './replaceAll';
 // Types
 export { default as Identity } from './fantasy-land/Identity';
diff --git a/src/replaceAll.js b/src/replaceAll.js
new file mode 100644
index 0000000000..5efb47a31d
--- /dev/null
+++ b/src/replaceAll.js
@@ -0,0 +1,34 @@
+import { curryN, split, join, pipe } from 'ramda';
+
+import isRegExp from './isRegExp';
+
+/**
+ * Replaces all substring matches in a string with a replacement.
+ *
+ * @func replaceAll
+ * @memberOf RA
+ * @since {@link https://char0n.github.io/ramda-adjunct/2.17.0|v2.17.0}
+ * @category String
+ * @sig String -> String -> String -> String
+ * @param {string} searchValue The substring to match
+ * @param {string} replaceValue The string to replace the matches with
+ * @param {string} str The String to do the search and replacement in
+ * @return {string} A new string containing all the `searchValue` replaced with the `replaceValue`
+ * @throws {Error} When `searchValue` is RegExp
+ * @see {@link http://ramdajs.com/docs/#replace|R.replace}, {@link https://github.com/tc39/proposal-string-replaceall|TC39 proposal}
+ * @example
+ *
+ * RA.replaceAll('ac', 'ef', 'ac ab ac ab'); //=> 'ef ab ef ab'
+ */
+const replaceAll = curryN(3, (searchValue, replaceValue, str) => {
+  if (isRegExp(searchValue)) {
+    throw new Error('searchValue must be a String, not a RegExp.');
+  }
+
+  return pipe(
+    split(String(searchValue)),
+    join(String(replaceValue))
+  )(str);
+});
+
+export default replaceAll;
diff --git a/test/replaceAll.js b/test/replaceAll.js
new file mode 100644
index 0000000000..e50e809524
--- /dev/null
+++ b/test/replaceAll.js
@@ -0,0 +1,50 @@
+import { assert } from 'chai';
+
+import * as RA from '../src';
+
+describe('replaceAll', function() {
+  it('should replace all matches', function() {
+    const value = 'ab cd ab cd ab cd';
+    const actual = RA.replaceAll('ab', 'ef', value);
+    const expected = 'ef cd ef cd ef cd';
+
+    assert.strictEqual(actual, expected);
+  });
+
+  context('given searchValue is RegExp', function() {
+    specify('should throw Error', function() {
+      assert.throws(() => RA.replaceAll(/a/g, 'c', 'abc'));
+    });
+  });
+
+  context('given empty string', function() {
+    specify('should return original value', function() {
+      assert.strictEqual(RA.replaceAll('a', 'c', ''), '');
+    });
+  });
+
+  it('should support boxing wrappers', function() {
+    const value = new String('ab cd ab cd ab cd');
+    const searchValue = new String('ab');
+    const replaceValue = new String('ef');
+    const actual = RA.replaceAll(searchValue, replaceValue, value);
+    const expected = 'ef cd ef cd ef cd';
+
+    assert.strictEqual(actual, expected);
+  });
+
+  it('should replace in very big strings', function() {
+    const bigString = 'ab cd'.repeat(10000);
+    const expected = 'ab ef'.repeat(10000);
+    const actual = RA.replaceAll('cd', 'ef', bigString);
+
+    assert.strictEqual(actual, expected);
+  });
+
+  it('should curry', function() {
+    assert.strictEqual(RA.replaceAll('a', 'c', 'aba'), 'cbc');
+    assert.strictEqual(RA.replaceAll('a')('c', 'aba'), 'cbc');
+    assert.strictEqual(RA.replaceAll('a', 'c')('aba'), 'cbc');
+    assert.strictEqual(RA.replaceAll('a')('c')('aba'), 'cbc');
+  });
+});