The 2011 Aircel Chennai Open was a tennis tournament played on outdoor hard courts. It was the 16th edition of the Chennai Open, and part of the 250 series of the 2011 ATP World Tour. It took place at the SDAT Tennis Stadium in Chennai, India, from 3 January through 9 January 2011.^[1]

	First round							Second round							Qualifying competition[2]
	1	Go Soeda	5
	WC	Daniel Puttkammer	2r
								1	Go Soeda	6	7
									Karunuday Singh	3	5
		Karunuday Singh	6	6
	WC	Andreas Gremelmayr	2	2
															1	Go Soeda	3	4
																David Goffin	6	6
		David Goffin	6	6
		Akash Wagh	1	1
									David Goffin	4	6	6
								7	Ivo Minář	6	3	1
		Vijay Sundar Prashanth	1	3
	7	Ivo Minář	6	6

	First round							Second round							Qualifying competition[2]
	2	Édouard Roger-Vasselin	6	6
		Shahbaaz Khan	0	0
								2	Édouard Roger-Vasselin	6	3	6
									Franko Škugor	4	6	3
		Franko Škugor	6	6
		Sanam Singh	1	2
															2	Édouard Roger-Vasselin	77	3	77
															5	Milos Raonic	62	6	65
	WC	Ajai Selvaraj	4	1
		Evgeny Kirillov	6	6
									Evgeny Kirillov	2	5
								5	Milos Raonic	6	7
		Aldin Šetkić	2	4
	5	Milos Raonic	6	6

	First round							Second round							Qualifying Round
	3	Conor Niland	6	5	4
		Vishnu Vardhan	4	7	6
									Vishnu Vardhan	1	4
									Ante Pavić	6	6
		Ante Pavić	6	6
		Aisam-ul-Haq Qureshi	4	4
																Ante Pavić	2	6	2
															6	Alexander Kudryavtsev	6	0	6
		Karan Rastogi	64	3
		Rajeev Ram	77	6
									Rajeev Ram	0	6	5
								6	Alexander Kudryavtsev	6	4	7
		Purav Raja	0	1
	6	Alexander Kudryavtsev	6	6

	First round							Second round							Qualifying competition[2]
	4	Konstantin Kravchuk	6	77
		Divij Sharan	2	63
								4	Konstantin Kravchuk	6	6
								WC	Rupesh Roy	3	1
		Vignesh Peranamallur	4	66
	WC	Rupesh Roy	6	78
															4	Konstantin Kravchuk	2	3
															8	Yūichi Sugita	6	6
		Leoš Friedl	6	3	6
		David Martin	4	6	3
									Leoš Friedl	w/o
								8	Yūichi Sugita
		Ranjeet Virali-Murugesan	3	0
	8	Yūichi Sugita	6	6