The Amazing Race 18 is the eighteenth installment of the reality television show The Amazing Race. The Amazing Race 18 featured eleven teams of two – each returning from a previous edition for the first time since Season 11 – in a race around the world for a $1 million prize.

The eighteenth cycle started on Sunday, February 20, 2011. It aired on CBS in the United States on Sunday nights at 8:00 pm ET/PT with the two-hour season finale on May 8, 2011. The show is hosted by Phil Keoghan.