Mathew Carey Lea | |
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| Born | August 18, 1823 |
| Died | March 15, 1897 (aged 73) Philadelphia, Pennsylvania, U.S. |
| Burial place | Laurel Hill Cemetery, Philadelphia, Pennsylvania, U.S. |
| Occupation(s) | Chemist, lawyer |
| Spouses | Elizabeth Jaudon
(m. 1852; died 1881)
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| Relatives | Isaac Lea (father) Frances Anne Carey (mother) Henry Charles Lea (brother) Henry Charles Carey (uncle) Matthew Carey (grandfather) |
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Mathew Carey Lea (August 18, 1823 – March 15, 1897) was an American chemist known for his research on the chemical and physical properties of silver halide salts and their usage in photography. He pioneered early work in mechanochemistry and developed Carey Lea Silver, a photochemical still in use today.