An object detection device for a vehicle includes a transmission and reception unit that transmits an electromagnetic wave and receives a reflected wave, a reflecting point computation unit that computes a position of a reflecting point of the electromagnetic wave on the object, a distance computation unit that computes a distance from the subject vehicle to the object, an end point detection unit that detects at least one of an end point on the right side of the object and an end point on the left side thereof, a shielding determination unit that determines whether the end point of the object is shielded by another object when viewed from the subject vehicle, and an end point movement speed computation unit that computes a lateral movement speed of the end point of the object determined as not being shielded.