Uliana Nikolayevna Nigmatullina (née Kaisheva, Russian: Ульяна Николаевна Нигматуллина (Кайшева); born 8 March 1994) is a Russian biathlete.

She is the only biathlete to win the four gold medals (individual, sprint, pursuit and relay) at the Youth World Championships, which she accomplished in 2013.

She competed in the 2018 Winter Olympics.

[1] All results are sourced from the International Biathlon Union.

This Russian biographical article relating to biathlon is a stub.