Umesha Thimashini (born 24 April 2001) is a Sri Lankan cricketer. In January 2019, she was named in Sri Lanka's squad for their series against South Africa. She made her Women's Twenty20 International cricket (WT20I) debut for Sri Lankan against South Africa Women on 1 February 2019. She made her Women's One Day International cricket (WT20I) debut, also against South Africa Women, on 11 February 2019.