| Kaya | |
| Succession: | Bey of the Kayı tribe (pre-Ottoman Empire) |
| Reign: | 1200 – 1214 |
| Full Name: | Bamsi Alp bin (Kızıl Buğa [1] or Basuk) bin Baytar bin Iğla bin Kutluğ bin Doğan bin Kaytun bin Sungur Tekin bin Bâki bin Sunka bin Yaki Timur bin Basak bin Gök Alp bin Oghuz Khagan bin Kara Han |
| Predecessor: | unknown |
| Successor: | Suleyman Shah |
| Issue: | Suleyman Shah |
| Father: | Kızıl Boğa[2] or Basuk[3] |
| Birth Date: | 1140 |
| Death Date: | 1214 (age 73-74) |
| Religion: | Sunni Islam |
Kaya Alp (Turkish, Ottoman (1500-1928);: قایا الپ|lit=Brave Rock) was, according to Ottoman tradition, the son of Kızıl Buğa[1] or Basuk[3] and the father of Suleyman Shah. He was the grandfather of Ertuğrul Ghazi and great grandfather of the Ottoman Empire founder, Osman I.[4] He was also famously known for being the successing name of Ertokus Bey’s son Kaya Alp. He was a descendant of the ancestor of his tribe, Kayı son of Gun son of Oghuz Khagan, the legendary progenitor of the Oghuz Turks.