Tatjana Fomina[1] (born April 26, 1954 in Tallinn) is an Estonian chess player holding the title of Woman Grandmaster and twice European senior women's champion.

Tatjana Fomina is ten times Estonian Women's Chess Championship winner (1977–1978, 1983, 1989, 1992, 1998, 2002–2003, 2012–2013).

Curiously, while at her peak, despite having GM standard results – Fomina could not secure a Womens Grandmaster Title.

Tatjana Fomina won the bronze medal at the Women's World Senior Chess Championship five times (2005, 2006, 2008, 2009, 2010).

In 2012, she won the Women's European Senior Chess Championship in Kaunas and also took silver (2007) and bronze (2006) medals in this competitions.