CONTROL DEVICE AND WORK VEHICLE

A control device and a work vehicle capable of suppressing wasteful travel until automated travel is started are provided. A control portion (80) includes a vehicle-position acquiring portion (85), a field-contour setting portion (83), a region setting portion (84), and a start-position setting portion (89). The vehicle-position acquiring portion (85) acquires position information (99) indicating a position of a combine harvester (1). The field-contour setting portion (83) sets a contour (981P) of a field (98) on the basis of a plurality of pieces of the position information (99). The region setting portion (84) sets an unworked region inside the contour (981P) on the basis of the plurality of pieces of the position information (99). The start-position setting portion (89) sets a corner closest to a position (921P) of the combine harvester (1) among a plurality of corners (921P) to (924P) of the unworked region to an automated-travel start position on the basis of the position information (99).