Kersti Tombak (born April 30, 1977) is an Estonian actress.

She graduated from the Viljandi College of Culture with a major in performing arts in 1999. Worked as an actress in Rakvere Theater from 1999 to 2005.

Since 2005, she has been a freelance actor, playing supporting parts in the production "Andmed Liina Pihlapuust" by the NGO Oma Lava, in the summer production "Tsepeliin" by Tõstamaa manor, etc.

In 2011, she had a part in the Estonian Television children's series "Nöbinina". In 2016, she played the family nurse Ester Käbin in the TV3 series "Doktor Silva". She has also played in the series "Kartulid ja apelsinid", "Pilvede all" and "Padjaklubi".