Doubles
2018 WTA Finals
Champions	Tímea Babos Kristina Mladenovic
Runners-up	Barbora Krejčíková Kateřina Siniaková
Score	6–4, 7–5

Defending champion Tímea Babos and her partner Kristina Mladenovic defeated Barbora Krejčíková and Kateřina Siniaková in the final, 6–4, 7–5 to win the doubles tennis title at the 2018 WTA Finals.

Babos and Andrea Sestini Hlaváčková were the reigning champions, but did not qualify together this year. Sestini Hlaváčková partnered Barbora Strýcová, but was defeated in the semifinals by Krejčíková and Siniaková.

Krejčiková and Siniaková secured the joint-year-end world No. 1 ranking by reaching the final. Babos and Mladenovic, alongside Strýcová, were also in contention for the year-end top ranking.

Seeds

Draw

Draw

	Quarterfinals							Semifinals							Final
	1	Barbora Krejčíková Kateřina Siniaková	6	6
		Nicole Melichar Květa Peschke	1	4
								1	Barbora Krejčíková Kateřina Siniaková	6	6
								3	Andrea Sestini Hlaváčková Barbora Strýcová	3	2
	3	Andrea Sestini Hlaváčková Barbora Strýcová	6	6
		Andreja Klepač María José Martínez Sánchez	1	2
															1	Barbora Krejčíková Kateřina Siniaková	4	5
															2	Tímea Babos Kristina Mladenovic	6	7
		Ashleigh Barty CoCo Vandeweghe	6	6
	4	Elise Mertens Demi Schuurs	1	4
									Ashleigh Barty CoCo Vandeweghe	77	3	[8]
								2	Tímea Babos Kristina Mladenovic	65	6	[10]
		Gabriela Dabrowski Xu Yifan	0	2
	2	Tímea Babos Kristina Mladenovic	6	6

References

• Main Draw