2018 Sydney International – Men's doubles

Wesley Koolhof and Matwé Middelkoop were the defending champions, but chose to compete with different partners in Auckland instead.

Men's doubles
2018 Sydney International
Champions	Łukasz Kubot Marcelo Melo
Runners-up	Jan-Lennard Struff Viktor Troicki
Score	6–3, 6–4

Main article: 2018 Sydney International

Łukasz Kubot and Marcelo Melo won the title, defeating Jan-Lennard Struff and Viktor Troicki in the final, 6–3, 6–4.

Seeds

1. Łukasz Kubot / Marcelo Melo (champions)
2. Jean-Julien Rojer / Horia Tecău (semifinals)
3. Feliciano López / Marc López (first round)
4. Rohan Bopanna / Édouard Roger-Vasselin (semifinals)

Draw

Key

• Q = Qualifier
• WC = Wild card
• LL = Lucky loser
• Alt = Alternate
• ITF = ITF entry
• PR = Protected ranking
• SR = Special ranking
• SE = Special exempt
• JE = Junior exempt
• JR = Junior Accelerator Programme entrant
• CO = College Accelerator Programme entrant
• NG = Next Gen Accelerator Program entrant
• w/o = Walkover
• r = Retired
• d = Defaulted

Draw

	First round							Quarterfinals							Semifinals							Final
	1	Ł Kubot M Melo	78	6
		F Mergea N Zimonjić	66	3				1	Ł Kubot M Melo	w/o
		N Mektić A Peya	6	65	[7]				D Džumhur R Jebavý
		D Džumhur R Jebavý	4	77	[10]										1	Ł Kubot M Melo	6	5	[10]
	4	R Bopanna É Roger-Vasselin	6	6											4	R Bopanna É Roger-Vasselin	4	7	[8]
		I Dodig F Verdasco	4	4				4	R Bopanna É Roger-Vasselin	77	77
	WC	C O'Connell M Reid	610	65					F Martin N Monroe	65	65
		F Martin N Monroe	712	77																		1	Ł Kubot M Melo	6	6
		F Fognini R Ram	3	7	[7]																		J-L Struff V Troicki	3	4
		J-L Struff V Troicki	6	5	[10]				J-L Struff V Troicki	6	710
	WC	A Bolt J Thompson	6	6				WC	A Bolt J Thompson	4	68
	3	F López M López	1	3												J-L Struff V Troicki	77	6
		JS Cabal R Farah	6	77											2	J-J Rojer H Tecău	65	1
		L Mayer D Schwartzman	3	62					JS Cabal R Farah	3	64
		P Lorenzi M Zverev	63	4				2	J-J Rojer H Tecău	6	77
	2	J-J Rojer H Tecău	77	6