J
- Janissary
- from Turkish yeniçeri, which means "a new soldier" (janissary on wiktionary)
- Jelick
- from Turkish yelek, the bodice or vest of a Turkish woman's dress.
- Jettru
- from Turkic, a union of seven Turkic peoples of Central Asia formed at the end of the 17th or beginning of the 18th century under one khan.
Read more about this topic: List Of English Words Of Turkic Origin