  An overview is given of the properties of the various kinds of quasi-periodic
luminosity modulations observed in cataclysmic variables (CVs). The two
principal types, known in the CV literature as dwarf nova oscillations and
quasi-periodic oscillations, have similarities to the high and low frequency
quasi-periodic oscillations in X-Ray binaries. There is a further well observed
class known as longer period dwarf nova oscillations. In CVs the observed
interrelations between these oscillations suggests a model of magnetically
controlled accretion onto a rapidly rotating equatorial belt of accreted gas.
Non-radial oscillations of the central white dwarf are observed in some
systems.
