Nikki Hiltz (born October 23, 1994) is a mid-distance runner from Aptos, California. Hiltz attended Aptos High School, where in 2012 they won the CIF California State Championship in the 1600 meters. Hiltz is a 6 time NCAA Division I All-American. Hiltz is openly gay, and came out as transgender and nonbinary on International Transgender Day of Visibility, March 31, 2021.