The Ascot Chase is a Grade 1 National Hunt steeplechase in Great Britain which is open to horses aged five years or older.
The event was first run in 1995, as the Comet Chase, and its distance was originally set at 2 miles and 3½ furlongs (3,923 metres).
This was modified slightly when the race was temporarily switched to Lingfield Park, and also upon its return to Ascot in 2007.
The race was run on a Wednesday until 1998, moving to its current Saturday in 1999.
It replaced the Whitbread Trial Handicap (3 miles 100 yards) on the Wednesday card, a race which was first run in 1966.