Bessel may refer to:
Mathematics and science Bessel beam Bessel ellipsoid Bessel function in mathematics Bessel's inequality in mathematics Bessel's correction in statistics Bessel filter, a linear filter often used in audio crossover systems Bessel transform, also known as Fourier-Bessel transform or Hankel transform Bessel window, in signal processing Besselian date, see Epoch (astronomy)#Besselian years
Places Bessel Fjord, NE Greenland Bessel Fjord, NW Greenland Bessel (crater), a small lunar crater
People Surname Friedrich Wilhelm Bessel (1784–1846), German mathematician, astronomer, and systematizer of the Bessel functions Johann Franz Bessel (1672–1749), German Benedictine abbot and historian Vasily Bessel (1843–1907), Russian music publisher
Given name Bessel Kok (born 1941), Dutch businessman and chess organiser Bessel van der Kolk (born 1943), Dutch psychiatrist
Other uses 1552 Bessel, an asteroid MV Bessel, a German merchant ship in service 1928–45, latterly for the Kriegsmarine V. Bessel and Co., a musical publishing firm co-founded by Vasily Bessel
See also Bessell