Andreae is a surname. The name may refer to:

• Andreae & Co., a historical pharmacy in Hanover
• Charles Andreae (1906–1970), English cricketer
• Giles Andreae (born 1966), British poet, artist, and greeting card writer
• Hieronymus Andreae (died 1556), German woodblock cutter, printer, publisher, and typographer
• Jakob Andreae (1528–1590), German Lutheran theologian, signatory of the 1577 Formula of Concord
• Johann Gerhard Reinhard Andreae (1724–1793), German natural scientist and polymath
• Johannes Valentinus Andreae (1586–1654), German theologian
• Julian Voss-Andreae (born 1970), German sculptor living and working in the USA
• Kerstin Andreae (born 1968), German politician and member of Alliance '90/The Greens in the Bundestag
• Laurentius Andreae (1470–1552), Swedish clergyman and scholar, one of the main proponents of the Swedish Protestant reformation
• Otto Stuart Andreae (1863–1930), British actor-manager as Otho Stuart
• Percy Andreae (fl. early 20th century), American anti-prohibitionist
• Volkmar Andreae (1879–1962), Swiss conductor and composer