Tikhonov

Tikhonov, sometimes spelled as Tychonoff ( _ru. Тихонов), or Tikhonova (feminine; Тихонова) is a Russian last name and may refer to:

;People
*Aleksandr Tikhonov, a Russian biathlon athlete
*Alexei Tikhonov, a Russian figure skater
*Andrey Nikolayevich Tychonoff, a Russian mathematician
*Andrey Vasilyevich Tikhonov, a Russian football player
*Konstantin Tikhonov, a Soviet army officer and Hero of the Soviet Union
*Mikhail Tikhonov, a Soviet soldier and Hero of the Soviet Union
*Nikolay Alexandrovich Tikhonov, a former Premier of the Soviet Union
*Nikolay Semenovich Tikhonov, a Russian writer, a member of Serapion Brothers literatury group
*Vasily Tikhonov (pilot), a Soviet pilot and Hero of the Soviet Union
*Vasily Tikhonov, a Soviet soldier and Hero of the Soviet Union
*Vasily Ivanovich Tikhonov, a Soviet soldier and Hero of the Soviet Union
*Viktor Pavlovich Tikhonov, a Soviet pilot and Hero of the Soviet Union
*Viktor Vasilyevich Tikhonov, a former coach for the Soviet national ice hockey team
*Vladimir Tikhonov, a Russian politician
*Vyacheslav Vasilyevich Tikhonov, a Soviet actor famous for Standartenführer Stirlitz role

;Mathematics
* Tychonoff spaces, completely regular topological spaces
* Tychonoff's theorem, a result on topological spaces
* the Tychonoff separation axioms in topology
* Tikhonov distribution is a random variable distribution

;Other
*Tikhonov regularization, a method of regularization of ill-posed problems
*Tikhonov (village), a village ("khutor") in the Republic of Adygea, Russia