Deimantė Daulytė (born 1989) is a Lithuanian chess woman grandmaster.
She won the women's Lithuanian Chess Championship in 2006, 2007, 2008, 2012 and 2013.
She qualified for the Women's World Chess Championship 2014 (eventually played in 2015), where she lost in dramatic style in the 1st round.
Her opponent was Monika Socko. After drawing the first 2 games, it went to a tie-break. Daulyte won the first rapid chess game. In the 2nd game of the tie-break, she reached the following position:
Instead of playing b6, which would have been checkmate in 1 move, she played Qa5, losing her queen. As a result, she lost that game. She didn't recover from that, and lost the next 2 games aswell.