Cut the watermelon into bite-sized cubes.
Place the diced watermelon in a large mixing bowl.
Crumble the feta cheese over the watermelon.
Add the chopped mint leaves.
In a small bowl, whisk together olive oil and balsamic vinegar.
Drizzle the dressing over the salad.
Gently toss to combine all ingredients.
Add salt and pepper to taste.
Let the salad sit for a few minutes to enhance flavors.
Serve chilled and enjoy!