Schlafly is a surname of German-Swiss origin. People with that surname include:
Andrew Schlafly (born 1961), American, son of Phyllis Schlafly, founder of Conservapedia
Hubert Schlafly (1919–2011), American electrical engineer, co-inventor of the teleprompter
Larry Schlafly (1878–1919), American baseball player
Phyllis Schlafly (1924-2016), American conservative activist
Thomas Schlafly (born 1948), American founder of the Saint Louis Brewery
A brand name of beers produced by the Saint Louis Brewery
Not to be confused with:
Ludwig Schläfli (1814–95), Swiss mathematician