Super Junior (Korean: 슈퍼주니어; Syupeo Junieo), also known as SJ or SuJu, is a South Korean boy band debuted on November 6, 2005, by producer Lee Soo-man of SM Entertainment. They are also dubbed by the media as the "King of Hallyu Wave" due to their prominent contributions in Korean Wave.^[1][2][3][4] Super Junior currently consists of 10 members, consisting of leader Leeteuk, Heechul, Yesung, Shindong, Sungmin, Eunhyuk, Donghae, Siwon, Ryeowook and Kyuhyun.

But Fans laways say it is  11 memebers plus 1 who is Choi Siwon Wife

Lee Yoo Young or known as Choi Yoo Young have been married to Choi siwon for 8 yrs now and have been living with the boys since then............it Not common but suprisingly the fans were more than okay with it...She even have her own Elf fans .....