A bow tie is a fashion accessory, popularly worn with other formal attire.
Bow tie, Bowtie, or Bow-tie may also refer to:
Places Bow Tie Nebula, another name for the Boomerang Nebula in the constellation Centaurus Bow-Tie Nebula, another name for NGC 40 (C2) in the constellation Cepheus
People Donald Tsang, nicknamed "Bow-tie Tsang", the second Chief Executive in Hong Kong SAR, China
Arts, entertainment, and media Bow Tie killer, a character in the Problem Child (1990 film) Bow ties are cool, a reference to The Eleventh Doctor in the Doctor Who series "Bowtie", a song by OutKast from their 2003 album Speakerboxxx/The Love Below
Brands and enterprises Bow Tie Cinemas Bow-tie, a brand name of polarization-maintaining optical fiber BowTie Inc., a magazine and book publisher
Mathematics Bow tie angle, an angle in geometry Bowtie stub, a radial stub Bowtie-quadrilateral, a geometric structure ⋈, the symbol used for the natural join operator of relational algebra
Science and technology Bow tie (biology), a common organizational architecture in biological and other self-organizing systems Bowtie (sequence analysis), ultrafast, memory-efficient short aligner for short DNA sequences Bowtie, a type of architecture in load balancing (computing) Bowtie array, a reflective array antenna Bowtie cotter pin, a formed wire fastener that resembles an R-clip, except it positively locks when installed Bowtie turtle, a Philippine forest turtle
Other uses Bowtie (road), a type of road junction Bow-tie diagrams, used in risk management and network theory Bowtie inversion, one of many types of roller coaster inversions Bowtie pasta, another name for farfalle