Ostertag

Ostertag is a German surname that may refer to the following people:


 * Blanche Ostertag (1872–1915), American decorative artist
 * Bob Ostertag (born 1957), American experimental sound artist, political activist and writer
 * Greg Ostertag (born 1973), American basketball player
 * Harold C. Ostertag (1896–1985), American politician
 * Heiger Ostertag (born 1953), German novelist
 * Molly Knox Ostertag (born 1991), American cartoonist and writer
 * Robert von Ostertag (1864–1940), German veterinarian
 * Sébastien Ostertag (born 1979), French team handball player