Alina Tomnikov (born June 24, 1988) is a Finnish-Russian actress and writer.

Alina Tomnikov was born on 24 June 1988 in Kerava, Finland to a Russian father and Finnish mother. Her parents met in Saint Petersburg, where her mother was studying to be physician. The family moved to Finland in the late 1980s. She graduated from Helsinki Theatre Academy with a master's degree in 2013.

Tomnikov married director and cinematographer Lauri Laukkanen on 7 July 2019. She gave birth to their first child in August 2023. Her cousin is ice hockey player Rami Määttä.