Dice the tomatoes into 1/4-inch pieces and place them in a medium mixing bowl.
Add the finely diced onion, jalapeño, and minced garlic to the bowl with the tomatoes.
Stir in the chopped cilantro, lime juice, salt, and cumin until everything is well combined.
Let the pico de gallo sit at room temperature for 10-15 minutes to allow the flavors to blend together.
Taste and adjust salt and lime juice as needed before serving.
Serve immediately with tortilla chips or use as a topping for your favorite dishes.