Statcoulomb is the unit of charge in the centimetre-gram-second electrostatic system.

Abcoulomb is an older unit from the centimetre-gram-second electromagnetic system.

The centimetre-gram-second system (CGS) is a metric system of physical units based on the centimetre as unit of length, the gram as unit of mass and the second as unit of time.

The centimetre–gram–second system of units (abbreviated CGS or cgs) is a variant of the metric system based on the centimetre as the unit of length, the gram as the unit of mass, and the second as the unit of time.

The centimetre-gram-second system (abbreviated CGS or cgs) is a metric system of physical units based on centimetre as the unit of length, gram as a unit of mass, and second as a unit of time.