blank theme

Google:
https://www.google.com/#hl=en&q=blank+wordpress+theme&aq=f&oq=&aqi=g2&fp=flbC24gbdiA

(Its truly amazing how people cant find their way to google but can always find their way here)

Search for Starkers theme.

You can use the 1st blank theme featured at https://www.themedreamer.com/bft and just comment out wp_header() and wp_footer(), granted that would limit you greatly. Are you sure you mean a single column design (no sidebards, etc)?