Seeing Is Believing
Seeing is believing may refer to:

Film and television
"Seeing is Believing" (Code Lyoko episode)
UFOs: Seeing is Believing, a UFO documentary film
Seeing Is Believing: Handicams, Human Rights and the News, a 2002 Canadian documentary film
Seeing is Believing (film), a 1934 British film

Music
Seein' Is Believin', a song Guy Lombardo and His Royal Canadians; see Guy Lombardo § Decca (1934–1935)
Seeing is Believing (album), an album by German singer Xavier Naidoo
"Seeing is Believing" (song), a song by Andrew Lloyd Webber from Aspects of Love
"Seein' Is Believing", a 1997 song by Adriana Evans

Other uses
Seeing is Believing (novel), a 1941 mystery novel by John Dickson Carr writing as "Carter Dickson"
Seeing is Believing (organization), a partnership for the prevention of avoidable blindness
Seeing Is Believing Tour, magician Dynamo's 2015-16 live tour