Prepare all ingredients by washing and cutting them as needed. Cube the avocados, halve the cherry tomatoes, and finely chop the red onion and cilantro.
In a mixing bowl, combine the cubed avocados, sweet corn, halved cherry tomatoes, chopped red onion, and cilantro.
In a small bowl, whisk together the lime juice, olive oil, salt, and black pepper.
Pour the dressing over the salad mixture and gently toss to combine, ensuring the avocados remain intact as much as possible.
Taste the salad and adjust the seasoning with additional salt, pepper, or lime juice if necessary.
Serve immediately, or refrigerate for up to 30 minutes before serving to allow the flavors to meld.