Sinjska alka je vjekovno tradicionalno viteško konjaničko natjecanje u kojem jahači (alkari) na konju, u punom galopu, oko 3 metra dugačkim kopljem gađaju željeznu alku obješenu na konopu preko trkališta.
The Alka Tournament of Sinj (Sinjska alka) is a traditional equestrian competition in which the knights (alkars) on horseback, in full gallop, holding a three metres long spear, try to spear the iron ring, alka, hanging on a rope across the racecourse.