The name Thayer is a boy's name of French origin meaning "tailor". Thayer and is often added to lists like New York Baby Names and discussed in our forums with posts like "Quick Question Thread?!".
From the experts:
Thayer is an affable, less-common alternative to Taylor, with a much more indirect connection to its occupational source. Actor Thayer David (born David Thayer: Thayer was his father's first name) was known for his roles in Rocky and Dark Shadows.