Tycho may refer to:
- Tycho Brahe (1546–1601), Danish nobleman and astronomer
- Tycho van Meer (born 1974), Dutch field hockey striker
- Tommy Tycho (born 1928), Hungarian-Australian pianist, conductor, composer
In astronomy:
- Tycho (crater), on the Moon
- Tycho Brahe (crater), on Mars
- The Tycho-1 Catalogue or Tycho-2 Catalogue of stars
- SN 1572, a supernova remnant, often called Tycho's supernova
- Tycho G, the companion star of SN 1572
In fiction:
- Tycho, a desert ranger henchman from the computer game Fallout
- Tycho, a shipboard AI in the computer game Marathon
- Tycho Brahe, a character from the Penny Arcade webcomic
- Tycho Celchu, a character in the Star Wars Universe
- Brother-Captain Tycho, a character in the Warhammer 40,000 universe
In software engineering:
- Tycho, an Apache Maven plugin for building Eclipse (software) programs.
In music:
- Tycho, the electronic music persona of graphic designer Scott Hansen.
Famous quotes containing the word tycho:
“In mathematics he was greater
Than Tycho Brahe, or Erra Pater:
For he, by geometric scale,
Could take the size of pots of ale;
Resolve, by sines and tangents straight,
If bread and butter wanted weight;
And wisely tell what hour o’ th’ day
The clock doth strike, by algebra.”
—Samuel Butler (1612–1680)