K0 may refer to: Spectral class K0, a star spectral class the 1965 first model of the Honda CB450 motorbike K0 may refer to: the Grothendieck group in abstract algebra the lateral earth pressure at rest Khinchin's constant the order-zero graph K0 may refer to: the neutral kaon, a strange meson with no charge in nuclear physics
See also
KO (disambiguation) 0K (disambiguation)