Arcalis (foaled on 7 March 2000 in Great Britain) is a British Thoroughbred racehorse, best known for his win in the Supreme Novices' Hurdle at the 2005 Cheltenham Festival.

Arcalis was sired by Lear Fan out of the mare Aristocratique, from whom he inherited his grey coat .

[2] His first win came in October 2002 when he won the Annual Members Nursery, a Class E race in which he beat out 20 other entries for the victory.

[5] In April 2007 at Sandown Park Racecourse in Esher, Surrey, England, Arcalis won the Betfredcasino Hurdle in a deadheat against Penzance.

However, the win was costly, as Arcalis was injured and it was serious enough to put him out for the entire 2007-2008 racing season.