A spark plug socket has an elastic base member and a contact element secured in the base member. The base member has a spark plug receptacle for a spark plug and the contact element has a contact receptacle for a terminal of the spark plug. The spark plug socket is removable in a removing direction from the spark plug. In an unloaded state of the spark plug socket arranged on the spark plug, a section of the contact receptacle engages behind the terminal of the spark plug in the removing direction of the spark plug socket. A longitudinal center axis of the contact receptacle is slanted relative to a longitudinal center axis of the spark plug receptacle. The contact element is adjustable against an elasticity of the base member such that an angle between the longitudinal center axis of the contact receptacle and the longitudinal center axis of the spark plug receptacle is reduced.