The guitar company that celebrated its 65th anniversary in 2011 was Fender. The company traces its origins to 1946, when Clarence “Leo” Fender founded Fender’s Radio Service in Fullerton, California. That business eventually developed into Fender Electric Instrument Manufacturing Company, making 2011 its 65th year.
Fender became one of the most influential names in electric-guitar history. Its Telecaster, introduced in the early 1950s, helped establish the solid-body electric guitar as a practical professional instrument. The Stratocaster followed in 1954, adding a contoured body, three pickups, and a versatile vibrato system that became central to rock, blues, country, and pop music.
A common mix-up is confusing Fender’s company anniversary with model anniversaries. Fender products also received milestone editions in 2011: the Telecaster and Precision Bass were promoted with 60th-anniversary branding because those models date to around 1951. The question asks about the company itself, however, making Fender the single correct answer.