A lock device for vehicle which is installed to one of a vehicle body and a door capable of being opened and closed with respect to said vehicle body, said lock device comprising: a hook rotatable between a locked position at which said hook is engaged with a striker that is provided on the other of said vehicle body and said door to hold a closed state of said door, and an unlocked position at which said hook is disengaged from said striker, said hook being biased to rotate toward said unlocked position; a pawl rotatable between an engaging position at which said pawl is engaged with said hook to hold said hook in said locked position and a non-engaging position at which said pawl is not engaged with said hook, said pawl being biased to rotate toward said engaging position; a cam member rotatable relative to a support member about a rotational center shaft and having a cam surface; an actuator which produces a driving force for rotating said cam member; and a lock release lever which includes a rotational center portion supported to be rotatable relative to said support member, and a cam follower which is positioned between said rotational center portion and an end of said lock release lever and comes in contact with said cam surface, wherein, by receiving a force from said cam surface via said cam follower, said lock release lever rotates between a lock allowable position at which said pawl is allowed to be positioned in said engaging position and a lock release position at which said pawl is made to rotate to said non-engaging position, characterized in that said lock release lever always extends over said cam member, wherein a holding portion is formed on one of said end of said lock release lever and said support member to be in slidable contact with the other. a hook rotatable between a locked position at which said hook is engaged with a striker that is provided on the other of said vehicle body and said door to hold a closed state of said door, and an unlocked position at which said hook is disengaged from said striker, said hook being biased to rotate toward said unlocked position; a pawl rotatable between an engaging position at which said pawl is engaged with said hook to hold said hook in said locked position and a non-engaging position at which said pawl is not engaged with said hook, said pawl being biased to rotate toward said engaging position; a cam member rotatable relative to a support member about a rotational center shaft and having a cam surface; an actuator which produces a driving force for rotating said cam member; and a lock release lever which includes a rotational center portion supported to be rotatable relative to said support member, and a cam follower which is positioned between said rotational center portion and an end of said lock release lever and comes in contact with said cam surface, wherein, by receiving a force from said cam surface via said cam follower, said lock release lever rotates between a lock allowable position at which said pawl is allowed to be positioned in said engaging position and a lock release position at which said pawl is made to rotate to said non-engaging position, characterized in that said lock release lever always extends over said cam member, wherein a holding portion is formed on one of said end of said lock release lever and said support member to be in slidable contact with the other.