Rost may refer to:

• Andrea Rost (born 1962), Hungarian lyric soprano
• Burkhard Rost (born 1961), German scientist - computational biologists
• Christina Rost (born 1952), German former women's team handball player
• Clarence Rost (born 1914), former Canadian professional ice hockey player
• Erik Rost (born 1985), Swedish ski-orienteering competitor
• Frank Rost (born 1973), German footballer who plays as a goalkeeper
• Johann Leonhard Rost (1688–1727), German astronomer and author from Nuremberg
• John Rost (born 1944),) is a former British ice hockey player
• Jürgen Rost, classical guitarist and professor of guitar
• Karl Rost (1880–1919), German entomologist and insect dealer
• Marinus Bernardus Rost van Tonningen (1852–1927), Dutch Major General
• Markus Rost, German mathematician who works at the intersection of topology and algebra
• Meinoud Rost van Tonningen (1894–1945), Dutch politician of the National Socialist Movement
• Monika Rost (born 1943), classical guitarist, lutenist and professor
• Peter Rost (doctor), M.D. (born 1959), former vice president at the pharmaceutical company Pfizer
• Peter Rost (handballer) (born 1951), former German Team handball player
• Peter Rost (UK politician) (born 1930), retired British Conservative politician and Member of Parliament
• Pierre Adolphe Rost (1797–1868), Louisiana politician, diplomat, lawyer, judge, and plantation owner
• Randi J. Rost (born 1960), computer graphics professional and frequent contributor to graphics standards
• Timo Rost (born 1978), German footballer who currently plays for RB Leipzig
• Yuri Rost (born 1939), Ukrainian photographer, journalist, author and traveller

Røst is a municipality in Nordland county, Norway. It is part of the traditional district of Lofoten. The administrative centre of the municipality is the village of Røstlandet.

Rost may refer to:

• Andrea Rost (born 1962), Hungarian lyric soprano
• Burkhard Rost (born 1961), German scientist - computational biologists
• Christina Rost (born 1952), German former women's team handball player
• Clarence Rost (born 1914), former Canadian professional ice hockey player
• Erik Rost (born 1985), Swedish ski-orienteering competitor
• Frank Rost (born 1973), German footballer who plays as a goalkeeper
• Johann Leonhard Rost (1688–1727), German astronomer and author from Nuremberg
• John Rost (born 1944),) is a former British ice hockey player
• Jürgen Rost, classical guitarist and professor of guitar
• Karl Rost (1880–1919), German entomologist and insect dealer
• Marinus Bernardus Rost van Tonningen (1852–1927), Dutch Major General
• Markus Rost, German mathematician who works at the intersection of topology and algebra
• Meinoud Rost van Tonningen (1894–1945), Dutch politician of the National Socialist Movement
• Monika Rost (born 1943), classical guitarist, lutenist and professor
• Peter Rost (doctor), M.D. (born 1959), former vice president at the pharmaceutical company Pfizer
• Peter Rost (handballer) (born 1951), former German Team handball player
• Peter Rost (UK politician) (born 1930), retired British Conservative politician and Member of Parliament
• Pierre Adolphe Rost (1797–1868), Louisiana politician, diplomat, lawyer, judge, and plantation owner
• Randi J. Rost (born 1960), computer graphics professional and frequent contributor to graphics standards
• Timo Rost (born 1978), German footballer who currently plays for RB Leipzig
• Yuri Rost (born 1939), Ukrainian photographer, journalist, author and traveller

Røst is a municipality in Nordland county, Norway. It is part of the traditional district of Lofoten. The administrative centre of the municipality is the village of Røstlandet.