Nicole Melichar, American tennis player
Nicole Melichar-Martinez (née Melichar; Czech: Nicole Melicharová, Czech pronunciation: [ˈmɛlɪxarovaː]) is an American tennis player who specializes in doubles.

She was born in the Czech Republic, but has lived in Florida since shortly after her birth. Her older sister Jane played tennis, and Melichar claims to have taken up the sport when she was just one year old.She has won ten doubles titles on the WTA Tour and one WTA 125 doubles title as well as two singles and seven doubles titles on the ITF Circuit. In May 2021, she peaked at No. 9 in the doubles rankings.

Melichar has won one Grand Slam title, winning the mixed-doubles crown at the 2018 Wimbledon Championships with Austrian partner Alexander Peya. She is also a two-time Grand Slam finalist in women's doubles, finishing runner-up at the 2018 Wimbledon Championships with Květa Peschke and the 2020 US Open with Xu Yifan.