Oona Orpana (born 21 January 2001) is a Finnish professional tennis player.

On the ITF Junior Circuit, she has a career-high ranking of 41, achieved on 26 February 2018.

On 29 June 2019, she won her first national doubles title (with Venla Ahti).

[1] In November 2019, she was awarded "Female Tennis Player of the Year" in Finland.

Orpana made her Fed Cup debut for Finland in 2015, while the team was competing in the Europe/Africa Zone Group II, when she was 14 years and 15 days old.