| Gender: | men |
| Division: | iii |
| Year: | 1998 |
| Duration: | October 1998– March 20, 1999 |
| Champ Stad: | Kreitzberg Arena |
| Champ City: | Norwich, Vermont |
| Champ: | Middlebury |
| Sid Watson: | Rob Smillie |
| Sid Watson Team: | St. Norbert |
The 1998–99 NCAA Division III men's ice hockey season began in October 1998 and concluded on March 20 of the following year. This was the 26th season of Division III college ice hockey.
Division II Findlay joined with 4 Division III schools to form the MCHA. After the season the Oilers jumped up to Division I but were allowed to immediately participate in postseason tournament because they officially remained a D-II program.
| Tournament | Dates | Teams | Champion |
|---|---|---|---|
| Blue Devil Invitational | October 23–24 | 4 | RIT |
| Pepsi Invitational | October 30–31 | 4 | Saint Michael's |
| RIT Tournament | October 30–31 | 4 | RIT |
| GN Shootout | November 27–28 | 4 | Norwich |
| PrimeLink Tournament | November 27–28 | 4 | |
| Babson Tournament | November 28–29 | 4 | Brockport State |
| Bowdoin Invitational | November 28–29 | 4 | Salem State |
| Elmira Tournament | November 28–29 | 4 | Elmira |
| Spurrier Invitational | November 28–29 | 4 | Amherst |
| Connecticut Tournament | December 11–12 | 4 | Mercyhurst |
| Codfish Bowl | December 29–30 | 4 | Saint Anselm |
| Cardinal Classic | January 2–3 | 4 | Plattsburgh State |
| Salem State Tournament | January 2–3 | 4 | Norwich |
| Hamot Hockey Classic | January 8–9 | 4 | Findlay |
Note: Mini-game are not included in final standings
See main article: 1999 NCAA Division III Men's Ice Hockey Tournament. Note: * denotes overtime period(s)