The Garrett Coliseum is a 12,500-seat multi-purpose arena in Montgomery, Alabama, United States.

It was built in 1951 and named after W. W. Garrett, the first chairman of the Alabama Agricultural Board.

In 2005 and 2006, it was home to the Montgomery Maulers of the National Indoor Football League.

The Garrett Coliseum Complex is also home to the official state horse show, by Law on the books the Alabama Open Horsemans Association State Championship Horse Show, which is held every year on Labor Day Weekend.

Adjacent venues in the Alabama National Fairgrounds include the Crawford Arena with 26,243 square feet of space; Teague Arena with 7800 square feet of space; a 14,400-square-foot Exhibit Building, and the 10,500-square-foot Homer Lewis Building.