The Motor Bob was an American cyclecar manufactured in Buffalo, New York, from 1911 to 1915.

A single-cylinder, 2½hp vehicle, the Motor Bob was sold for home assembly by "boys from 12 to 15".

Plans could be purchased for 25 cents (equivalent to $8 in 2023).

From advertisements, by 1912 Motor Bob was also sold as the Niagara Motor Bob by the makers of the Lad's Car.

The completed car was 96 inches long 31 inches wide and weighed 150 pounds.