Drain and rinse the black beans thoroughly in a colander, then transfer them to a large mixing bowl.
Add the corn kernels to the bowl with the beans, mixing gently to combine.
Finely chop the red onion and dice the bell pepper, then add them to the bowl, stirring well.
Chop the fresh cilantro and sprinkle it over the mixture, folding gently to incorporate all the flavors.
In a small bowl, whisk together olive oil, lime juice, ground cumin, salt, and pepper until well combined.
Pour the dressing over the salad ingredients in the large bowl, tossing gently until everything is evenly coated and vibrant.
Let the salad sit for a few minutes to allow the flavors to meld and the textures to soften slightly.
Give the salad a final toss, taste and adjust the salt and pepper as needed.
Transfer to a serving dish and enjoy this fresh, crunchy, and flavorful black bean salad.