Bit by bit indicates a gradual change. It may also refer to: bit-by-bit algorithm, an efficient algorithm to calculate trigonometric and other functions that converges one digit (or bit) per iteration.

Bit by Bit, Bit By Bit and Bit-by-Bit may refer to:

Film and television Bit by Bit (2012), a short film starring Karan Soni, American. "Bit by Bit" (2007), a television episode of Big Windup!, a Japanese baseball-themed anime series based on the manga. "Bit by Bit" (2008), a television episode of WordWorld, an American animated educational children's television series. "Bit by Bit" (2015), a television episode of CSI: Cyber, an American police procedural drama. "Bit by Bit" (2022), a television episode of Sasaki and Miyano, a Japanese manga series adapted to anime.

Music "Bit by Bit" (1985), the theme from Fletch by Stephanie Mills, an American singer, songwriter and actress. ("Bit by bit") (1996), a song from Humanity by The Mad Capsule Markets, Japanese hardcore punk. "Bit by Bit" (1996), a work for orchestra by Dirk Brossé, a Belgian conductor and composer. "Bit by Bit" (1999), a song from Forever Took Too Long by John Landry, Canadian country. ("Bit By Bit") (2002), a song from Reason 4 Breathing? by Brown Eyes, a South Korean singing duo. "Bit by Bit" (2007), a song from Freedom Lasso by Akala, a British rapper, writer and activist "Bit By Bit" (2007), a song from Lionheart: Tussle with the Beast by Klashnekoff, English rapper. "Bit by Bit" (2012), a song from The Sticks by Mother Mother, Canadian indie rock. "Bit By Bit" (2013), a song from All I Want by The Reverb Junkie, an American music producer, songwriter and vocalist. "Bit by Bit" (2016), a song from Retrogore by Aborted, Belgian death metal. "Bit by bit" (一) (2020) a song from Folio Vol.1: One and One, by Qing-Feng Wu, Taiwanese singer-songwriter. Music by Yoga Lin .

Audio Bit by Bit (2005–present), a regular podcast segment of PotterCast, a Harry Potter fansite. "Bit by Bit" (2022), a podcast from Lore, a documentary hosted by Aaron Mahnke.

Literature Bit by Bit: An Illustrated History of Computers (1984), a book by Stan Augarten, American. Bit by Bit (1995), a children's book by Steve Sanfield, American poet, author, and Freedom Rider. Bit by Bit: How P2P is Freeing the World (2015), an e-book by Jeffrey Tucker, an American libertarian writer, publisher, and entrepreneur. Bit by Bit: How Video Games Transformed Our World (2017), a book by Andrew Ervin, American. Bit By Bit: Social Research in the Digital Age (2018), a book by Matthew J. Salganik, American sociologist. "Bit-by-Bit" (2019), a manga chapter from Ace of Diamond, by Yuji Terajima, Japanese artist. Bit By Bit: A Catalyst Guide To Advancing Women In High Tech Companies (2003), a publication of Catalyst (nonprofit organization). "Bit by Bit" (1989–1994), a column in Computer Language by Stan Kelly-Bootle, a British author, academic, singer-songwriter and computer scientist. "Bit by Bit" (2008), a webcomics chapter of Red String, by Gina Biggs, Japanese.

Other uses Bit by Bit, a role in Myrra & Helen starred by Myrra Malmberg, a Swedish singer, dancer, songwriter, and photographer Bit by Bit (2005), an art exhibit showcasing Analia Saban, an Argentinian-American contemporary conceptual artist, and Lisa Lapinski, an American visual artist Bit by Bit Company, a company that produced shows such as Boys' Lockdown (2020), and Games People Play (2015)

See also "Bit by Bit, Frame by Frame" (1962), a television show hosted by Roald Øyen, Norwegian. "Bit By Bit (We're Building a Set)" (2003), a song from Whoo Hoo! Wiggly Gremlins! by The Wiggles, Australian children's music. "Little by Little, Bit by Bit" (2013), a manga episode from This Art Club Has a Problem!, Japanese.