Knollwood may refer to:
in the United States (by state)
- Knollwood, Los Angeles, California
- Knollwood, Illinois
- Knollwood Country Club, a country club located north of South Bend, Indiana
- Knollwood (Worcester, Massachusetts), listed on the National Register of Historic Places (NRHP) in Worcester County
- Knollwood (Dublin, New Hampshire), listed on the NRHP in Cheshire County
- Knollwood Estate, Muttontown, New York, an estate once owned by Zog of Albania
- Knollwood (Star Lake, New York), listed on the NRHP in St. Lawrence County
- Knollwood Club, an Adirondack Great Camp on Lower Saranac Lake in New York
- Knollwood (Bearden Hill), Knoxville, Tennessee, a historic house listed on the NRHP in Knox County
- Knollwood, Texas