Girls' doubles
2021 US Open
Champions	Ashlyn Krueger Robin Montgomery
Runners-up	Reese Brantmeier Elvina Kalieva
Score	5–7, 6–3, [10–4]

Kamilla Bartone and Oksana Selekhmeteva were the defending champions, having won the previous edition in 2019, however Bartone was no longer eligible to participate in junior events, whilst Selekhmeteva chose not to participate.

Ashlyn Krueger and Robin Montgomery won the title, defeating Reese Brantmeier and Elvina Kalieva in the final, 5–7, 6–3, [10–4].

Seeds

All seeds received a bye into the second round.

Draw

Finals

	Semifinals							Final
	1	Victoria Jiménez Kasintseva Ane Mintegi del Olmo	1	5
	3	Ashlyn Krueger Robin Montgomery	6	7
								3	Ashlyn Krueger Robin Montgomery	5	6	[10]
								8	Reese Brantmeier Elvina Kalieva	7	3	[4]
	6	Alex Eala Hanne Vandewinkel	7	2	[7]
	8	Reese Brantmeier Elvina Kalieva	5	6	[10]

Top half

	First round							Second round							Quarterfinals							Semifinals
								1	V Jiménez Kasintseva A Mintegi del Olmo	6	2	[10]
		Clervie Ngounoue Charlotte Owensby	6	6					C Ngounoue C Owensby	3	6	[7]
		Bianca Behúlová Alina Shcherbinina	4	4											1	V Jiménez Kasintseva A Mintegi del Olmo	6	77
	WC	Sarah Hamner Liv Hovde	6	3	[5]										5	B Fruhvirtová L Fruhvirtová	4	63
		Pimrada Jattavapornvanit Annabelle Xu	4	6	[10]				P Jattavapornvanit A Xu	5	3
								5	B Fruhvirtová L Fruhvirtová	7	6
																						1	V Jiménez Kasintseva A Mintegi del Olmo	1	5
																						3	A Krueger R Montgomery	6	7
								3	A Krueger R Montgomery	6	6
		Sofia Costoulas Laura Hietaranta	2	4					J García M Mutavdzic	4	1
		Julia García Matilda Mutavdzic	6	6											3	A Krueger R Montgomery	4	6	[15]
		Marina Stakusic Yang Ya-yi	4	3											7	M Guth J Middendorf	6	2	[13]
		Ariana Pursoo Theadora Rabman	6	6					A Pursoo T Rabman	1	4
								7	M Guth J Middendorf	6	6

Bottom half

	First round							Second round							Quarterfinals							Semifinals
								6	A Eala H Vandewinkel	6	3	[10]
		Michaela Laki Radka Zelníčková	6	7					M Laki R Zelníčková	3	6	[6]
	WC	Tatum Evans Amelia Honer	0	5											6	A Eala H Vandewinkel	6	64	[10]
		Solana Sierra Johanne Svendsen	4	3												E Coleman M Sieg	1	77	[7]
		Elizabeth Coleman Madison Sieg	6	6					E Coleman M Sieg	6	6
								4	P Marčinko N Szabanin	4	4
																						6	A Eala H Vandewinkel	7	2	[7]
																						8	R Brantmeier E Kalieva	5	6	[10]
								8	R Brantmeier E Kalieva	6	6
		Dana Guzmán Linda Klimovičová	7	6					D Guzmán L Klimovičová	2	4
		Lucija Ćirić Bagarić Sebastianna Scilipoti	5	4											8	R Brantmeier E Kalieva	77	6
		Océane Babel Sabina Zeynalova													2	K Dmitruk D Shnaider	65	1
		Alexis Blokhina Valencia Xu	w/o						A Blokhina V Xu	3	3
								2	K Dmitruk D Shnaider	6	6

References

• Main Draw