David Sumner, K1ZZ, is Chief Executive Officer and Secretary of the American Radio Relay League (ARRL), the national association for Amateur Radio. He is responsible to the ARRL Board of Directors for managing the affairs of the League including its headquarters staff and official journal, QST.

First licensed as KN1ZND in 1962 at age 13, Dave has been active in nearly every phase of Amateur Radio operating with special emphasis on CW contesting. Active from the first as an ARRL volunteer, he joined the Headquarters staff in 1968 for the summer, became a part of the permanent staff in 1972, and was named Assistant General Manager four years later. He was named Secretary and General Manager in 1982, with a change in title to Executive Vice President in 1985 and the additional title of Chief Executive Officer in 2001. The title of Executive Vice President was phased out in 2011.

In the 1970s, Dave was deeply involved in worldwide Amateur Radio preparations for the 1979 World Administrative Radio Conference (WARC) of the International Telecommunication Union and attended the three-month conference in Geneva as a member of the International Amateur Radio Union (IARU) observer team. He also served on the IARU team at the 2000 World Radiocommunication Conference (WRC) in Istanbul and was administrative officer for the team that represented the IARU at the 2003 WRC in Geneva where the amateur 40-meter allocation was dramatically improved. More recently, he attended half of the 2007 WRC for the IARU. Dave was Secretary of the IARU and a member of its Administrative Council from 1982 to 1989 and from May 1999 to September 2009, and has traveled to more than 60 countries in connection with his ARRL and IARU responsibilities.

Dave Sumner holds a B.A. degree in Political Science from Michigan State University, where he was active from the club station, W8SH, from 1967 to 1970. He also holds the Master of Business Administration degree from the University of Connecticut and is a member of the Beta Gamma Sigma business honorary society. He is trustee of the ARRL Headquarters club station, W1AW, and the IARU club station, NU1AW.

Dave resides with his wife Linda, KA1ZD, on a 15-acre "antenna farm" in rural Coventry, Connecticut, where he is active in church affairs as well as on the air. Their daughter Deryn, N1UCI, is an attorney in Washington, DC.