Blur
Blur may refer to:

Optics and images
Bokeh, the aesthetic quality of the out-of-focus parts of an image
Box blur, a graphic-art effect
Defocus aberration, blurring of an image due to incorrect focus
Gaussian blur, a graphic-art effect
Motion blur, blurring of an image due to movement of the subject or imaging system

Arts, entertainment, and media
Fictional characters
Red Blue Blur, or The Blur, an alternate identity for Clark Kent in Smallville
The Atlanta Blur or The Blur, a character in the Marvel MAX comic Supreme Power

Films
Blurred (film), a 2002 Australian film
Blurs (film), a 2011 Croatian film
Blurr (film), a 2022 Indian horror thriller film by Ajay Bahl

Music
Blur (band), an English rock band
Blur (Blur album), a 1997 album by the band
Blur: The Best Of, a 2000 album by the band
Blur (Rachael Lampa album), a 2002 album by Rachael Lampa
"Blur", a song by Britney Spears from the album Circus
"Blur", a song by Imagine Dragons, from Mercury – Acts 1 & 2
"Blur", a song by Johnny Orlando
"Blur", a song by MØ from the album Forever Neverland
"Blur", a song by We Came As Romans, from their self-titled album
"Blur", a song by Wretch 32, featured on the soundtrack of FIFA 13

Other uses in arts, entertainment, and media
Blur (video game), a 2010 arcade racing game
Blur: How to Know What's True in the Age of Information Overload, a book by journalists Tom Rosenstiel and Bill Kovach
The Blur, a member of DP 7, part of Marvel Comics' New Universe line

Other uses
Blur, in computing, a loss of focusBlur (browser extension), formerly DoNotTrackMe, now Ironvest
Blurring, a form of trademark dilution
Blur Group, an online marketplace provider
Blur Studio, a graphics and video effects company

See also
Blurr, Transformers fictional robot superheroes
Motoblur, a Motorola Android UI