The 2011 WOW Tennis Challenger was a professional tennis tournament played on outdoor clay courts. It was the 4th edition of the tournament and part of the 2011 ITF Women's Circuit, offering a total of $50,000 in prize money. It took place in Waterloo, Ontario, Canada between July 4 and July 10, 2011.

Country	Player	Rank1	Seed
USA	Alison Riske	115	1
UKR	Tetiana Luzhanska	192	2
HKG	Zhang Ling	198	3
ISR	Julia Glushko	200	4
CAN	Sharon Fichman	245	5
RSA	Chanel Simmonds	252	6
USA	Chichi Scholl	271	7
TPE	Hsu Wen-hsin	284	8

• ¹ Rankings are as of June 20, 2011

The following players received wildcards into the singles main draw:

• Élisabeth Abanda
• Sonja Molnar
• Kimberley-Ann Surin
• Carol Zhao

The following players received entry from the qualifying draw:

• Victoryia Kisialeva
• Elizabeth Lumpkin
• Diana Ospina
• Nicola Slater

Sharon Fichman def. Julia Boserup, 6–3, 4–6, 6–4

Alexandra Mueller / Asia Muhammad def. Eugenie Bouchard / Megan Moulton-Levy, 6–3, 3–6, [10–7]

• Official website