Moose International is a fraternal and service organization founded in 1888, consisting of the Loyal Order of Moose, with nearly 1 million men in roughly 2,000 Lodges, in all 50 U.S. states and four Canadian provinces, plus Great Britain and Bermuda; and the Women of the Moose with more than 400,000 members in roughly 1,600 Chapters in the same areas. It is headquartered in Mooseheart, Illinois.

Moose International supports the operation of Mooseheart Child City & School, a 1,000-acre (4.0 km2) community for children and teens in need, located 40 miles (64 km) west of Chicago; and Moosehaven, a 63-acre (250,000 m2) retirement community for its members near Jacksonville, FL. Also, Moose Lodges and Chapters conduct approximately $75 million worth of community service (counting monetary donations and volunteer hours worked) annually.

Additionally, the Moose organization conducts numerous sports and recreational programs, in local Lodge/Chapter facilities called either Moose Family Centers or Activity Centers, in the majority of 44 State and Provincial Associations, and on a fraternity-wide basis.