Hathaway Pines is an unincorporated community in Calaveras County, California, 8 km (5 mi) south of Arnold and 20 km (12.5 mi) northeast of Angels Camp. It lies at an elevation of 3323 feet (1013 m). Hathaway Pines' post office was established in 1943; it has the zip code 95233.
The place's name honors Robert B. Hathaway, a vacation resort promoter who became the first postmaster.
This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 ðF. According to the Köppen Climate Classification system, Hathaway Pines has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.
The United States Census Bureau defined Hathaway Pines as a census designated place (CDP) in 2023.