diff --git a/DIRECTORY.md b/DIRECTORY.md
index b78ca59906..c701430ecc 100644
--- a/DIRECTORY.md
+++ b/DIRECTORY.md
@@ -61,6 +61,7 @@
 * Linked-List
 * [CycleDetection](https://github.com/TheAlgorithms/Javascript/blob/master/Data-Structures/Linked-List/CycleDetection.js)
 * [DoublyLinkedList](https://github.com/TheAlgorithms/Javascript/blob/master/Data-Structures/Linked-List/DoublyLinkedList.js)
+ * [MergeTwoSortedLinkedList](https://github.com/TheAlgorithms/Javascript/blob/master/Data-Structures/Linked-List/MergeTwoSortedLinkedList.js)
 * [RotateListRight](https://github.com/TheAlgorithms/Javascript/blob/master/Data-Structures/Linked-List/RotateListRight.js)
 * [SingleCircularLinkedList](https://github.com/TheAlgorithms/Javascript/blob/master/Data-Structures/Linked-List/SingleCircularLinkedList.js.js)
 * [SinglyLinkList](https://github.com/TheAlgorithms/Javascript/blob/master/Data-Structures/Linked-List/SinglyLinkList.js)
diff --git a/Data-Structures/Linked-List/MergeTwoSortedLinkedList.js b/Data-Structures/Linked-List/MergeTwoSortedLinkedList.js
new file mode 100644
index 0000000000..66b46950e4
--- /dev/null
+++ b/Data-Structures/Linked-List/MergeTwoSortedLinkedList.js
@@ -0,0 +1,35 @@
+// Problem source and explanation: https://leetcode.com/problems/merge-two-sorted-lists/
+
+/**
+ * Merge two sorted linked lists and return it as a sorted list. The list should be made by splicing together the nodes of the first two lists.
+ * @param {ListNode} l1
+ * @param {ListNode} l2
+ * @return {ListNode}
+ */
+
+const mergeTwoSortedLists = (l1, l2) => {
+ let node = l1
+ if (!l1) return l2
+ if (!l2) return l1
+ while (node.next) {
+ node = node.next
+ }
+ node.next = l2
+ node = l1
+ while (node) {
+ let curr = node
+ while (curr) {
+ if (node.val> curr.val) {
+ ;[curr.val, node.val] = [node.val, curr.val]
+ }
+ curr = curr.next
+ }
+ node = node.next
+ }
+ return l1
+}
+
+// console.log(mergeTwoLists([1, 2, 4], [1, 3, 4]))
+// console.log(mergeTwoLists([], [0]))
+// console.log(mergeTwoLists([], []))
+export { mergeTwoSortedLists }
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