|Date of birth:||October 12, 1943|
|Place of birth:||Warren, Ohio|
|Height:||6 ft 3 in (1.91 m)|
|Weight:||250 lb (113 kg)|
|High school:||Niles (OH) McKinley|
|NFL Draft:||1966 / Round: 19 / Pick: 289|
|AFL draft:||1966 / Round: 1 / Pick: 3|
|Career NFL statistics|
|Player stats at PFR|
Karl Kenneth Singer (born October 12, 1943) is a former American football tackle who played three seasons with the Boston Patriots of the American Football League. He was drafted by the Boston Patriots in the first round of the 1966 American Football League Draft. He was also drafted by the Cleveland Browns in the 19th round of the 1966 NFL Draft. He played college football at Purdue University and attended Niles McKinley High School in Niles, Ohio.
- "Karl Singer". profootballarchives.com. Retrieved October 22, 2014.