New York Islanders trades
| Toronto Maple Leafs acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | 1973 eleventh round pick (#159-Norm McLeod) | May 15, 1973 | cash |  |
| 1973 tenth round pick (#144-Lee Palmer) | ||||
| Philadelphia Flyers acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | Terry Crisp | March 5, 1973 | Jean Potvin | |
| player to be named later (Glen Irwin) | ||||
| Minnesota North Stars acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | Don Blackburn | March 1, 1973 | cash | |
| Atlanta Flames acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | Arnie Brown | February 13, 1973 | Ernie Hicke | |
| future considerations (Bill MacMillan) | ||||
| Detroit Red Wings acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | Brian Lavender | January 17, 1973 | Bob Cook | |
| Ken Murray | Ralph Stewart | |||
| Montreal Canadiens acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | Murray Anderson | December 7, 1972 | cash | |
| Tony Featherstone | ||||
| New York Rangers acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | cash | November 14, 1972 | Ron Stewart | |
| Detroit Red Wings acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| Denis DeJordy | October 4, 1972 | Arnie Brown | |
| Don McLaughlin | Gerry Gray | |||
| St. Louis Blues acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | cash | September 1, 1972 | Brian Lavender | |
| St. Louis Blues acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| cash | August 31, 1972 | Dave Pulkkinen | |
| Comment: Exact date unknown | ||||
| Montreal Canadiens acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| cash | June 26, 1972 | Denis DeJordy | |
| Montreal Canadiens acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| cash | June 26, 1972 | Murray Anderson | |
| Montreal Canadiens acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| cash | June 26, 1972 | Tony Featherstone | |
| New York Rangers acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| Islanders promised to not take certain players in 1972 expansion draft | June 8, 1972 | 1973 7th round pick (#110-Denis Andersen) | |
| 1973 8th round pick (#126-Denis Desgagnes) | ||||
| Montreal Canadiens acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| 1973 2nd round pick (#17-Glenn Goldup) | June 6, 1972 | Alex Campbell | |
| cash | Denis DeJordy | |||
| Glenn Chico Resch | ||||
| future considerations (Germain Gagnon) | ||||
| Minnesota North Stars acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| future considerations (cash) | June 6, 1972 | Gord Labossiere | |
| Buffalo Sabres acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
 | Islanders promised to not draft certain players in 1972 expansion draft | June 6, 1972 | 1972 8th round pick (#117-Rene Levasseur) | |
| Buffalo Sabres acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| Islanders promised to not draft certain players in 1972 expansion draft | June 6, 1972 | 1972 9th round pick (#133-Bill Ennos) | |
| Buffalo Sabres acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| Islanders promised to not draft certain players in 1972 expansion draft | June 6, 1972 | 1972 7th round pick (#101-Don McLaughlin) | |
| Buffalo Sabres acquire | Date | New York Islanders acquire | ||
|---|---|---|---|---|
| Islanders promised to not draft certain players in 1972 expansion draft | June 6, 1972 | 1972 tenth round pick (#146-Rene Lambert) | |