Gather all ingredients.
Dice the fresh pineapple into small cubes.
Halve the cherry tomatoes and set aside.
Finely chop the red onion.
Mince the jalapeño, removing seeds for less heat.
Chop the fresh cilantro.
In a mixing bowl, combine pineapple, tomatoes, onion, jalapeño, and cilantro.
Squeeze lime juice over the mixture.
Season with salt to taste.
Gently toss everything together until well combined.