Lilia Vaygina-Efremova (born 15 April 1977 in Cheboksary, Chuvashia, Soviet Union) is a Russian (until 2002), Belarusian (from 2002 to 2003) and Ukrainian (since 2003) biathlete.
On 16 February 2006 she won the Winter Olympics bronze medal for the 7.5 km biathlon competition, becoming the first Ukrainian athlete to win a medal at the 2006 Winter Olympics.