Undertaking may refer to:

A task (project management), in general The services provided by an undertaker, mortician, or a funeral director A formal legal promise to do something Surety bond A company, in business, in particular in European Union law where the term is used interchangeably Undertaking (driving), overtaking another vehicle using a lane nearer the curb-side Undertaking (band), a Hungarian thrash metal band

"The Undertaking", an episode of Arrow

See also Undertaker (disambiguation)