This Is It may refer to:
Literature This Is It (novel), a 1996 novel by Joseph Connolly This Is It, a 1956 novel by Hal Ellson
Music Albums Michael Jackson's This Is It (album) or the title song (see below), 2009 This Is It (concert residency), a 2009–2010 planned series of concerts Michael Jackson's This Is It, a 2009 film documenting Jackson's rehearsals for the concerts This Is It (Jack Ingram album), 2007 This Is It (Jimmy Ibbotson album), 1999 This Is It (Melba Moore album) or the title song (see below), 1976 This Is It: The Best of Faith No More, 2003 This Is It: The Very Best Of, by Dannii Minogue, 2013 This Is It! (The A&M Years 1979–1989), by Joe Jackson, 1997 This Is It, by Bride, 2003 This Is It!, by Betty Davis, 2005 This Is It! (Bob Newhart album), 1967 This Is It, by Six, 2002
Songs "This Is It" (Kenny Loggins song), 1979 "This Is It" (Jim Reeves song), 1965 "This Is It" (Melba Moore song), 1976; covered by Dannii Minogue, 1993 "This Is It" (Michael Jackson song), 2009 "This Is It", an unreleased song recorded by Michael Jackson, unrelated to the above, 1984 "This Is It" (Ryan Adams song), 2004 "This Is It" (Scotty McCreey song), 2018 "This Is It" (Staind song), 2009 "This Is It", by Billy Preston from That's the Way God Planned It, 1969 "This Is It", by Innosense from So Together, 2000 "This Is It", by Jay and the Americans, 1962 "This Is It", by Lo Moon from Lo Moon, 2018
Television This Is It (TV series), a 2016–2017 Nigerian drama series This Is It, a 1960s Australian variety program on ATV "This Is It", the theme song of The Bugs Bunny Show "This Is It", the theme song of the 1970s American sitcom One Day at a Time "This Is It" (One Day at a Time episode), the first episode of the 2017 One Day at a Time remake
Other This Is It! (bar), the oldest continually operating gay bar in Wisconsin, US This Is It Collective, a group of filmmakers best known for creating the Don't Hug Me I'm Scared series
See also Diz Iz It!, a 2010 Philippine variety show This Is It and I Am It and You Are It and So Is That and He Is It and She Is It and It Is It and That Is That, a 2008 album by Marnie Stern If This Is It (disambiguation)