John Tierney may refer to:
Politicians John Tierney (Australian politician) (born 1946), Liberal member of the Australian Senate John Tierney (Irish politician) (born 1951) John F. Tierney (born 1951), United States Representative from Massachusetts John H. Tierney (1831-1907), American farmer and politician John J. Tierney (19??-2005), Boston City Council member
Sportsmen John Tierney (footballer), player for Cork City Football Club John Tierney (Gaelic footballer) (born 1982), Gaelic footballer John Tierney (rower), American rower John Tierney (cricketer) (born 1964), English cricketer
Others John Tierney (journalist) (born 1953), American journalist John Tierney (film editor), known for his editing work on Sesame Street John M. Tierney, United States naval aviator and finalist for NASA Astronaut Group 1