How Long Has This Been Going On (disambiguation)

How Long Has This Been Going On, may refer to:

• "How Long Has This Been Going On?", a 1927 song by George and Ira Gershwin
• How Long Has This Been Going On? (Sarah Vaughan album), a 1978 album by Sarah Vaughn
• How Long Has This Been Going On, a 1996 album by Van Morrison with Georgie Fame "and Friends"
• "How Long?", a 1974 song by Ace