Date of Birth: 
About Guy Day
- Guy Day (July 30, 1930 – January 16, 2010) was an American advertising executive who cofounded Chiat/Day with Jay Chiat in 1968.
- The agency went on to do memorable work for Apple Computer, including the Macintosh "1984" Super Bowl commercial.
- He was born in Chicago, Illinois. Day founded an agency called Faust/Day with Tom Faust.
- When Faust left, Day called Chiat to discuss a merger with Jay Chiat & Associates.
- Day won a coin toss to see who would be the president of the new agency.Day retired from Chiat/Day in 1986.
- He later did business development at Keye/Donna/Pearlstein.Day had two sons, Cameron and Bill, who also work in advertising.
- Guy died in January 2010 in Pflugerville, Texas.
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