A holder for an optoelectronic sensor comprises a first holder part that is configured for fastening to a fixed-position fixing surface and a second holder part that can be coupled to a housing of the optoelectronic sensor, with the second holder part being rotatable relative to the first holder part about a first pivot axis. Provision is made that a receiver for a screwdriver blade is provided at the second holder part and a toothed arrangement is provided at the first holder part, or vice versa, wherein at least one tooth of the toothed arrangement projects into the receiver such that it can be acted on by one blade end of a screwdriver blade introduced into the receiver while supporting the other blade end at an abutment section of the receiver to rotate the second holder part with respect to the first holder part about a first pivot axis.