Viivi Vainikka (born 23 December 2001) is a Finnish ice hockey player and member of the Finnish national team, currently playing in the Swedish Women's Hockey League (Swedish: Svenska damhockeyligan; SDHL) with Luleå HF/MSSK.

[2] She made her debut in the Naisten Liiga, the top flight of Finnish women's hockey at the age of 15 with Team Kuortane.

After scoring a career-best 52 points in 30 games in the 2018–19 season, including 28 goals, she won the Emma Laaksonen Award for fair play.

[5] Vainikka won silver with the Finnish national team at the 2019 Women's World Championship.

[6][7] She was officially named to the Finnish roster for the 2020 Women's World Championship on 4 March 2020, prior to the cancellation of the tournament International Ice Hockey Federation (IIHF) on 7 March 2020 due to public health concerns surrounding the COVID-19 pandemic.