Heat medium nonstick skillet over medium-high heat until hot. Add beef; cook and stir 4 to 6 minutes or until browned.
Stir in corn and barbecue sauce. Reduce heat to medium; cover and cook 5 minutes or until hot, stirring occasionally.
Place tortillas on 4 individual plates. Spoon 1/4 of beef mixture down center of each tortilla; top each with 1/4 cup chopped tomato and 1 tablespoon cheese. Fold tortillas in half or roll up.