Lewis H. Nash | |
|---|---|
 | |
| Born | c. 1852 |
| Died | November 17, 1923 (aged 70–71) |
| Alma mater | Stevens Institute of Technology, Master of Engineering in Mechanical engineering |
| Occupation | Mechanical engineer |
| Engineering career | |
| Discipline | Mechanical |
| Significant design | Liquid ring vacuum pump |
| Awards | Doctor of Engineering (h.c.) |
| Member of the Connecticut House of Representatives | |
| In office 1923–1925 Serving with Frank Gregory | |
| Preceded by | Harvey Kent, Samuel Watkins |
| Succeeded by | Freeman Light, Harvey Kent |
Lewis H. Nash (c. 1852 – November 11, 1923) was an American engineer who invented the liquid-ring-vacuum pump, and was the holder of over a hundred United States patents for pumps, engines, and other equipment. He founded the Nash Engineering Company in 1905, and served as a member of the Connecticut House of Representatives.