Frank Buchser (1828–1890), born Franz Buchser in Feldbrunnen (Solothurn), Switzerland, was a Swiss painter. He worked within the Realist tradition, producing over a thousand oil paintings during his career. Buchser died in his birthplace.
Buchser was an extensive traveler and adventurer, a characteristic reflected in his diverse subject matter. His body of work includes portraits of significant American figures from the post-Civil War era and compositions exploring Oriental themes.
