| Term | Chair | Username |
|---|---|---|
| 2017- | Miguel Young de la Sota '18 | mcyoung |
| 2016-17 | Lizhou Sha '18 | slz |
| 2014-16 | Victor Vasiliev '16 | vasilvv |
| 2013-14 | Justin Dove G | dove |
| 2013 | Alex Chernyakhovsky '13 | achernya |
| 2012-13 | Benjamin Barenblat '13 | bbaren |
| 2011-12 | David Wilson G | dwilson |
| 2010-11 | Jessica Hamrick '11 | jhamrick |
| 2009-10 | Edward Yang '12 | ezyang |
| 2009 | Nelson Elhage '09 | nelhage |
| 2008-09 | Greg Price SM '08 | price |
| 2007-08 | Tim Abbott '07 | tabbott |
| 2005-07 | Jeff Arnold '07 | jbarnold |
| 2004-05 | Jennifer Tu '05 | jtu |
| 2003-04 | Chris Lesniewski-Laas '01, MEng '03 | golem (“ctl”) |
| 2002-03 | Richard Tibbetts '03 | tibbetts |
| 2001-02 | Liana Lareau '00 | fyfer |
| 2000-01 | Nathan Williams '01 | nathanw |
| 1999-2000 | Gisele Ellis (Proulx) '98, SM '00 | gisele |
| 1998-99 | Elliot Schwartz '98, MEng '99 | elliot |
| 1997-98 | James Kretchmar '99 | kretch |
| 1996-97 | Yonah Schmeidler MEng '98 | yonah |
| 1996 | Eric Mumpower '96, SB '03 | nocturne |
| 1995-96 | Greg Hudson MEng '96 | ghudson |
| 1994-95 | Jessie Stickgold-Sarah '96, SM '97 | sorokin |
| 1993-94 | Matthew Gray '97, SM '99 | mkgray |
| 1992-93 | Derek Atkins '93 | warlord |
| 1992 | Chee Chew '93, SM '93 | web |
| 1991-92 | Julie Bourne '92 | jcbourne |
| 1990-91 | Andrew Greene '91 | amgreene |
| 1989-90 | Robert French '90 | rfrench |
| 1988-89 | Stan Zanarotti SM '89 | srz |
| 1986-88 | Ken Raeburn '88 | raeburn |