Blumenthal may refer to:
- Blumenthal (surname)
- Blumenthal Rare Book and Manuscript Library of the Judah L. Magnes Museum, Berkeley, California, United States
- Blumenthal, Texas
- Blumenthal, Saskatchewan
- Blumenthal, Schleswig-Holstein, a municipality in Germany
- Blumenthal Brothers Chocolate Company
- North Carolina Blumenthal Performing Arts Center, Charlotte, NC, United States
- 21414 Blumenthal, a Main-belt Asteroid
- Blumenthal Field, North Carolina WW2 airfield
- Blumenthal Observation Tower
- Prix Blumenthal (1919-1954)
- Daniel von dem blühenden Tal (Daniel of the Flowering Valley), an Arthurian romance composed around 1220
- von Blumenthal family
- Zion Blumenthal Orphanage