The women's singles was one of five events of the 1920 World Hard Court Championships tennis tournament held in Paris, France from 23 until 30 May 1920. The draw consisted of 15 players. Suzanne Lenglen was the defending champion, but did not participate. Dorothy Holman won the title, defeating Francisca Subirana in the final.

	First round							Quarterfinals							Semifinals							Final
	Dorothy Holman		6	6
	Olive Winslow		2	4				Dorothy Holman		6	6
								Marie Danet		2	4
															Dorothy Holman		6	4	6
	Jeanne Vaussard		6	6											Suzanne Amblard		2	6	0
	Isabel Fonrodona		4	0				Jeanne Vaussard		4	3
	Suzanne Amblard		w/o					Suzanne Amblard		6	6
	Suzanne Lenglen																					Dorothy Holman		6	7
	Phyllis Satterthwaite		6	6																		Panchita Subirana		0	5
	Germaine Golding		2	4				Phyllis Satterthwaite		6	6
	Elisabeth d'Ayen		6	4	6			Elisabeth d'Ayen		3	2
	Genevieve Cousin		2	6	1										Phyllis Satterthwaite
	Marguerite Billout		6	6											Panchita Subirana		w/o
	Miss Lammin		3	3				Marguerite Billout		8	4
	Panchita Subirana		6	6				Panchita Subirana		10	6
	Suzanne Deve		2	2