diff --git a/src/main/java/com/thealgorithms/divideandconquer/KaratsubaMultiplication.java b/src/main/java/com/thealgorithms/divideandconquer/KaratsubaMultiplication.java
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+// Karatsuba Multiplication Algorithm
+//
+// -----References-----
+// https://en.wikipedia.org/wiki/Karatsuba_algorithm
+// https://www.geeksforgeeks.org/dsa/karatsuba-algorithm-for-fast-multiplication-using-divide-and-conquer-algorithm/
+
+package com.thealgorithms.divideandconquer;
+
+public final class KaratsubaMultiplication {
+
+    // Private constructor to prevent instantiation
+    private KaratsubaMultiplication() {
+        throw new UnsupportedOperationException("Utility class");
+    }
+
+    // Karatsuba multiplication function
+    public static long karatsuba(long x, long y) {
+        if (x < 10 || y < 10) {
+            return x * y;
+        }
+
+        int n = Math.max(Long.toString(x).length(), Long.toString(y).length());
+        int m = n / 2;
+
+        long high1 = x / (long) Math.pow(10, m);
+        long low1 = x % (long) Math.pow(10, m);
+        long high2 = y / (long) Math.pow(10, m);
+        long low2 = y % (long) Math.pow(10, m);
+
+        long z0 = karatsuba(low1, low2);
+        long z1 = karatsuba(low1 + high1, low2 + high2);
+        long z2 = karatsuba(high1, high2);
+
+        return (z2 * (long) Math.pow(10, 2 * m)) + ((z1 - z2 - z0) * (long) Math.pow(10, m)) + z0;
+    }
+}
+