Billy Wayne Grammer (August 28, 1925 – August 10, 2011) was an American country music singer and accomplished guitar player. He recorded the million-selling "Gotta Travel On", which made it onto both the country and pop music charts in 1959. Grammer would become a regular performer on the Grand Ole Opry, eventually designing, and marketing his namesake guitar after co-founding a guitar company, in Nashville, Tennessee.