Östberg is a Swedish topographic surname, which means "east mountain" or "east hill", from the Swedish terms öst ("east") and berg ("mountain" or "hill").^[1] Alternative spellings include Østberg and Ostberg. The surname may refer to:

• Annika Östberg (born 1954), Swedish convict
• Carolina Östberg (1853–1929), Swedish singer
• Cecilia Östberg (born 1991), Swedish ice hockey player
• Curt Östberg (1905–1969), Swedish tennis player
• Frida Östberg (born 1977), Swedish footballer
• Gunnar Östberg (1923–2017), Swedish cross-country skier
• Ingvild Flugstad Østberg (born 1990), Norwegian cross-country skier
• Ivar Østberg (born 1942), Norwegian politician
• Mads Østberg (born 1987), Norwegian rally driver
• Mattias Östberg (born 1977), Swedish footballer
• Moje Östberg (1897–1984), Swedish Navy rear admiral
• Olov Östberg, Swedish researcher
• Ragnar Östberg (1866–1945), Swedish architect