Below is a list of teams from the manga and anime series Fairy Tail, by Hiro Mashima.
A "team" consists of at least two members but may also be a combination of teams in cases of large-scale, important missions. Teams are formed for the purpose of simplifying ordinary, illegal and special missions in Fairy Tail. Each team is commonly affiliated with a guild and works on job requests, both legal and illegal. Teams may be disbanded due to mission accomplishment or failure, withdrawal of a member or the leader, or their affiliated organization being disbanded.
There are unofficial teams listed here as well. Unofficial teams are groups of people who were never officially stated to be teams, but are grouped together due to them working together.
(† = Unofficial Team)