Joseph Palmer Dyer (January 29, 1827 – July 7, 1891) was an American politician of California, mine superintendent and stockbroker.
He was born in Vinalhaven, Maine, the son of George Dyer (1785–1865) and Jane Pendleton (1792–1863).
He was married on October 4, 1853, in Rockport, Maine, to Deborah Hatheway Curtis (1829-?)
They had the following children, all born in California: Alice C. Dyer (ca.
While his family lived in Woburn, Massachusetts, in 1870, Dyer was in Mariposa, California, working as a superintendent of a mine.