Tanglewood is an estate and music venue in Lenox and Stockbridge, Massachusetts.

Tanglewood may also refer to:

• Tanglewood (Akron, Alabama)
• Tanglewood, Florida
• Tanglewood, Indiana
• Tanglewood (Peewee Valley, Kentucky), 1869, see National Register of Historic Places listings in Oldham County, Kentucky
• Tanglewood (Magnolia, Mississippi), 1850, see National Register of Historic Places listings in Pike County, Mississippi
• Tanglewood (Chillicothe, Ohio), a historic house built in 1850
• Tanglewood Plantation, Lynchburh, South Carolina, 1850, an Historic Place listings in South Carolina
• Tanglewood Historic District, listed on the National Register of Historic Places listings in Davidson County, Tennessee
• Tanglewood, Houston, a neighborhood in Houston, Texas
• Tanglewood (Maidens, Virginia), a historic hotel and tavern built in 1929
• Tanglewood Island, Washington

• Tanglewood, Ottawa, a neighbourhood in Ottawa

• Tanglewood Tales (1853), a book by Nathaniel Hawthorne
• Tanglewood (1987 video game)
• "Tanglewood", a first-season episode of CSI: NY
• Tanglewood (2018 video game)

• Tanglewood Festival Chorus, the official chorus of the Boston Symphony Orchestra and Boston Pops Orchestra
• Tanglewood Music Center, a summer music academy for emerging professional musicians
• Boston University Tanglewood Institute, a summer music training program
• Tanglewood Jazz Festival, a defunct summer music festival

• Tukwila (processor), a computer processor once codenamed Tanglewood
• Tanglewood Guitars, a British guitar manufacturer
• Tanglewood Mall, a Virginia shopping mall
• Tanglewood Park, a golf course and park in Forsyth County, North Carolina
• Tanglewood Middle School shooting, a 2022 fatal school shooting Greenville County, South Carolina