Women's singles
1940 U.S. National Championships
Final
Champion	Alice Marble[1]
Runner-up	Helen Jacobs
Score	6–2, 6–3
Details
Draw	55
Seeds	7
Events
Singles men women Doubles men women
← 1939 · U.S. National Championships · 1941 →

First-seededAlice Marble defeated second-seededHelen Jacobs 6–2, 6–3 in the final to win the women's singles tennis title at the1940 U.S. National Championships. The tournament was played on outdoorgrass courts and held from September 2, through September 7, 1940 at theWest Side Tennis Club inForest Hills, Queens, New York.^[1] Marble won the tournament without losing a set.^[2][3][4]

The draw consisted of 55 players of which seven were seeded.

The eight seeded U.S. players are listed below.Alice Marble is the champion; others show in brackets the round in which they were eliminated.

	Quarterfinals							Semifinals							Finals
	2	Helen Jacobs	3	6	6
	7	Virginia Wolfenden	6	4	1
								2	Helen Jacobs	2	6	6
									Mary Hardwick	6	1	4
	3	Pauline Betz	7	1	2
		Mary Hardwick	5	6	6
															2	Helen Jacobs	2	3
															1	Alice Marble	6	6
	1	Alice Marble	6	6
	6	Helen Bernhard	2	3
								1	Alice Marble	6	6
									Valerie Scott	3	3
	4	Dorothy Bundy	6	4	3
		Valerie Scott	2	6	6

• U.S. National Championships (tennis) by year – Women's singles
• 1940 in American women's sports
• 1940 in women's tennis
• 1940 U.S. National Championships (tennis)
• Women's sports in New York City
• 1940 in New York City
• Forest Hills, Queens

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