This is a list of franchise records for the New York Islanders, a team forming part of the National Hockey League. It includes every franchise record ever won by the Islanders, regardless of whether a record was set previously.
| Most points | 118 | 1981–82 | ||
| Most wins | 54 | 1981–82 | ||
| Most losses | 60 | 1972–73 | ||
| Most ties | 22 | 1974–75 | ||
| Most goals for | 385 | 1981–82 | ||
| Most goals against | 347 | 1972–73 | ||
| Fewest points | 30 | 1972–73 | ||
| Fewest wins | 12 | 1972–73 | ||
| Fewest losses | 15 | 1978–79 | ||
| Fewest ties | 4 | 1983–84 | ||
| Fewest goals for | 126 170 | 1994–95 (shortened season) 1972–73 | ||
| Fewest goals against | 158 190 | 1994–95 (shortened season) 1975–76 | ||
| Most penalty minutes | 1822 | 1988–89 | ||
| Fewest penalty minutes | 881 | 1972–73 | ||
| Most shutouts | 11 | 2018-19 NHL season | 2018-19 (Robin Lehner 6, Thomas Greiss 5)[1] |
| Most penalty minutes (combined) | 346 | February 11, 2011 vs. Pittsburgh Penguins[2] |
| Record[3] | Amount | Record holder | |
| Most points | 1,353 | Bryan Trottier | |
| Most goals | 573 | Mike Bossy | |
| Most assists | 853 | Bryan Trottier | |
| Most penalty minutes | 1879 | Mick Vukota | |
| Most shorthand goals | 19 | Anders Kallur | |
| +/- | 470 | Bryan Trottier | |
| Most powerplay goals | 181 | Mike Bossy | |
| Most game winning goals | 82 | Mike Bossy | |
| Most shots | 3053 | Denis Potvin |
| Record | Amount | Record holder | |
| Most wins | 304 | Billy Smith | |
| Most losses | 230 | Billy Smith | |
| Most ties | 104 | Billy Smith | |
| Overtime/shootout losses | 24 | Rick DiPietro | |
| Most shots against | 19083 | Billy Smith | |
| Most goals against | 2008 | Billy Smith | |
| Most saves | 17075 | Billy Smith | |
| Most shutouts | 25 | Glenn Resch | |
| Most time on ice | 38,129:28 | Billy Smith |
| Record | Amount | Record holder | Season | |
| Most games played | 83 | |||
| 1993–94 | ||||
| 1993–94 | ||||
| Most points | 147 | 1981–82 | ||
| Most goals | 69 | 1978–79 | ||
| Most assists | 87 | 1978–79 | ||
| Most penalty minutes | 356 | 1986–87 | ||
| Most shorthand goals | 7 | 1980–81 | ||
| +/- | 76 | 1978–79 | ||
| Most powerplay Goals | 28 | 1980–81 | ||
| Most game winning goals | 11 | 1983–84 | ||
| Most shots | 315 | 1980–81 |
| Record | Amount | Record holder | Season | |
| Most wins | 38 | 2014–15 | ||
| Most consecutive wins | 11 | 2014–15 | ||
| Most losses | 35 | 1972–73 | ||
| Most ties | 17 | 1974–75 | ||
| Overtime/shootout losses | 9 | 2006–07 | ||
| Most shots against | 1917 | 2006–07 | ||
| Most goals against | 195 | 1972–73 | ||
| Most saves | 1761 | 2006–07 | ||
| Most shutouts | 7 | 1975–76 2020–21 2021–22 | ||
| Most time on ice | 3,742:47 | 2001–02 |
| Most goaltender saves | 73 / 75 | April 18–19, 1987 vs. Washington Capitals[4] |