Hubert Selby Jr.: It/ll Be Better Tomorrow is a 2005 documentary film about writer Hubert Selby Jr.

The film's title It/ll Be Better Tomorrow is taken from Selby's novel, The Demon, the slash is included in Selby's typography.

In the film, Selby explains that, on his manual typewriter, an apostrophe meant typing an "uppercase 8", so it was simpler to use a slash. Selby objects to apostrophes generally, preferring the spelling "dont" to "don't".

The 79-minute film features new interviews with Selby, known by his nickname "Cubby", as well as Lou Reed, Ellen Burstyn, Jared Leto, James Remar, Darren Aronofsky, Uli Edel, Gilbert Sorrentino, Nick Tosches, Jerry Stahl, Richard Price, Amiri Baraka, James Ragan, Michael Silverblatt, Jem Cohen, Kenneth Shiffrin, Nicolas Winding Refn, Desmond Nakano, Susan Compo, and Kaytie Lee with archival appearances by Henry Rollins and Anthony Kiedis. The film is narrated by Robert Downey Jr.