Keller may refer to:

• Keller (surname)
• Keller (given name)

• Keller, Georgia, an unincorporated community
• Keller, Indiana, an unincorporated community
• Keller, Texas, a city
• Keller, Virginia, a town
• Keller, Washington, an unincorporated community and census-designated place

• Keller, Shopian, India, a village
• Keller, Zonguldak, Turkey, a village
• Keller Inlet, Palmer Land, Antarctica
• Keller Lake, Northwest Territories, Canada
• Keller Island, an islet near Ushant, a French island in the English Channel

• Keller (automobile)
• Keller beer, a style of beer
• Keller Golf Course, a public golf course in Maplewood, Minnesota, United States
• Keller Graduate School of Management, a former school of DeVry University form 1970 to 1990
• Keller High School, Keller, Texas
• Keller Group, a British-based ground engineering company
• Kevin Keller (character), a fictional character in the Archie Comics universe
• Rachel Keller, a fictional character in The Ring film series

• Keller Ferry, a ferry crossing on Franklin D. Roosevelt Lake in Washington state, United States
• Keller House (disambiguation)
• Tour Keller, a high-rise building in Paris
• Keller's reagent, used in organic chemistry
• Keller Sisters and Lynch, an American pop music group in the 1920s and 1930s
• Gottfried-Keller-Preis, one of the oldest Swiss literary awards