From Firehouse Subs to Capriotti’s and PrimoHoagies, these chains serve the best meatball subs in America right now.

A well-made meatball sub is one of the most filling and satisfying sandwiches a hungry diner can opt for, with many restaurants offering versions of this Italian-American staple on their menus.

Meatball subs are an Italian-American dish made up of meatballs, marinara sauce and melted cheese on a hoagie or Italian roll. The combination of these simple ingredients creates a filling, savory sub ...