Daniel O'Connor, better known as Danny Boy or Danny Boy O'Connor, is an American rapper, art director, and the executive director of The Outsiders House Museum. O'Connor spent his childhood in New York, before moving to Los Angeles in the 1980s. In the 1990s, O'Connor co-founded the rap group House of Pain, with fellow rapper Erik Schrody (Everlast) and DJ Leor Dimant. Based on their cultural heritage they fashioned themselves as rowdy Irish-American hooligans. O'Connor played the role of art director, designing logos, branding, hype man, and co-rapper. In 1992, with the singles "Jump Around" and "Shamrocks and Shenanigans", their self-titled debut album, also known as Fine Malt Lyrics, went platinum.

The Outsiders House Museum is a museum in Tulsa, Oklahoma, about Francis Ford Coppola's coming-of-age movie,The Outsiders (1983), and the 1967 novel by the same name it adapts by S. E. Hinton. It aims to preserve the house which served as the primary film set for the Curtis Brothers. The museum was created by hip-hop artist Danny Boy O'Connor, who is a long-time fan of The Outsiders.