Gather all ingredients on your counter.

Rinse and drain black beans and corn under cold water.

Chop cherry tomatoes, red onion, and avocado into bite-sized pieces.

In a large mixing bowl, combine black beans, corn, tomatoes, red onion, avocado, and cilantro. Toss gently.

Drizzle lime juice and olive oil over the mixture; season with salt and pepper. Mix until well combined.

Chill in the fridge for at least 30 minutes before serving with tortilla chips or alongside grilled meats.