The 2019–20 Women's Volleyball Thailand League is the 15th season of the Women's Volleyball Thailand League, the top Thai professional league for women's volleyball clubs, since its establishment in 2005, also known as CP Women's Volleyball Thailand League due to the sponsorship deal with Charoen Pokphand.

The season will begin on 18 January 2020 and concluded on 30 July 2019.

The promoted teams are Diamond Food and Rangsit University.

Rangsit University retains its position after relegation in previous season, while Diamond Food reaches a top division for the first time.

Diamond Food replaced King Bangkok (relegated after four years in the top division).