Beans are collectible items that have made an appearance in three games to date. Additionally, the Beanish are a race of bean-like people.
 Mario & Luigi series
 Mario & Luigi: Superstar Saga
Beans are plentiful in this game, and while collecting them is entirely optional (and time-consuming), they will help Mario and Luigi. There are four kinds of beans in the game, and each is acquired in a different way.
All beans can be taken to the Starbeans Café, where they are blended into stat-boosting coffee for Mario and Luigi.
 Mario & Luigi: Partners in Time
In this game, Beans are dug up by Baby Mario and Baby Luigi. These can be traded to Fawful in his shop, Fawful's Bean 'n' Badge, for Badges. The Beans in this game bear a resemblance to Hee Beans, although they are never actually given any name other than "Bean".
 Mario & Luigi: Bowser's Inside Story
Mario & Luigi collect beans that will boost stats. These beans are called Heart Beans (which add 1 point to the player's HP), Special Beans (which add one point to the player's SP), and Power Beans (which adds a point to the player's attack power). An oversized Bean appears as an attack of Crawfuls, and also Magifoofa.
If the player pauses the game, they can access a list of beans that they have collected. The list also shows how many beans are in an area. There are 251 beans in the whole game: