Edwin R. Fellows (May 29, 1865 – May 21, 1945) was an American inventor and entrepreneur from Torrington, Connecticut who designed and built a new type of gear shaper in 1896 and, with the mentoring of James Hartness, left the Jones & Lamson Machine Company to co-found the Fellows Gear Shaper Company in Springfield, Vermont, which became one of the leading firms in the gear-cutting segment of the machine tool industry.

Fellows' machines made a vital contribution to the mass production of effective and reliable gear transmissions for the nascent automotive industry.

As a result of his father's death, Fellows had to go to work as a department store clerk while his mother had to take on lodgers.

"[13] During World War II the Fellows Gear Shaper Company plant was enlarged to a peak work force of 3,300, including 400 women.

[16] Fellows gear shapers continued to be manufactured and supported by Bourn & Koch, Inc. of Rockford, Illinois, as of 2022.

[17] Fellows received 39 patents pertaining to gear shaping, generating, grinding and measuring machines.