Nelli Laitinen is a Finnish ice hockey player and member of the Finnish national team. She is serving as a captain of the Minnesota Golden Gophers women's ice hockey program during the 2024–25 season.
Cornelli "Nelli" Cooman is a Dutch former athlete of Surinamese descent. At the 60 metres, she is two-time World indoor champion, six-time European indoor champion and former world record holder, running 7.00 secs in 1986. She also won 19 national titles.
Nelli Neumann (1886 – 1942) was a German mathematician who worked in synthetic geometry. She was one of the first women to obtain a doctorate in mathematics at a German university.