Reginald John Connelly, born on October 22, 1895, in Buckhurst Hill, Essex, England, was a prominent British songwriter and music publisher. He passed away on September 23, 1963, in Poole, Dorset, England. Connelly is best known for his collaboration with fellow songwriter Jimmy Campbell. Together, they formed the successful music publishing firm Campbell Connelly in London in 1929, after initially working together as songwriters since 1925.

The duo, sometimes using the pseudonym Irving King, created several notable songs during the 1920s and 1930s. Their first major hit was "Show Me the Way to Go Home," which became popular in both Britain and America. They also wrote the classic "If I Had You" with Ted Shapiro, which was recorded by famous artists such as Judy Garland and Frank Sinatra. Another significant success was "Goodnight Sweetheart," co-written with Ray Noble. One of their enduring compositions is "Try a Little Tenderness," co-written with Harry M. Woods, which was later famously revived by Otis Redding.

Connelly was known for his astute business acumen, and he continued to run the music publishing business, expanding it significantly by forming partnerships with film companies and American firms. This expansion helped Campbell Connelly become one of the most successful music publishing companies globally. Among the popular songs published by the company in later years were "I Left My Heart in San Francisco" and "Big Spender."