Greenwich Tree Conservancy currently has an executive director, 16 members serving on the Board of Directors, and 13 members serving on the Advisory Board.

Board of Directors
Peter Malkin
President
Cheryl Dunson
Vice President
Mark Greenwald
Secretary
Gary Silberberg
Treasurer
Bob Brooker
John Conte
Gina C. Gould
Ginny Gwynn
Mary Hull
Miriam Mennin
Karen Sadik-Khan
Patty Sechi
Heidi B. Smith
Hon. Peter J. Tesei
Ex-officio
Bruce Spaman
Ex-officio
Denise Savageau
Ex-officio
Executive Director
JoAnn Messina
Executive Director
Advisory Board
Ann Elliman
Co-chair
Hon. Livvy Floren
Co-chair
Sue Baker
Robert Bartlett
Sam Bridge III
Keith Felcyn
Jeanne Host
Leslie S. Lee
James McArdle III
David Ogilvy
Nancy Standard
Hon. Henry J. Stern
John H. Troy II