Lyubov Tkach (Russian: Любовь Ткач; born 18 February 1993) is a Russian athlete competing in the heptathlon. She represented her country at the 2015 World Championships in Beijing finishing 23rd. Earlier that year she won the silver medal at the 2015 European U23 Championships. Her main personal bests are 6151 points in the heptathlon (Cheboksary 2015) and 4368 points in the indoor pentathlon (Saint Petersburg 2015).