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The 2008–09 Slovenian Hockey League season was the 18th season of the Slovenian Ice Hockey League. The competition was mostly made up of teams from Slovenia, but there were also two teams from Croatia.

At the end of the regular season, the playoffs were held. It was the first time that the playoffs featured a non-Slovenian team. Jesenice won the title after defeating Olimpija in the final.

Teams

• Alfa
• Bled
• HK Olimpija
• HDD Olimpija (play-offs only)
• Jesenice (play-offs only)
• Maribor
• Maribor II
• Medveščak
• Mladi Jesenice
• Mladost
• Slavija
• Triglav Kranj

Standings after the regular season

Rk	Team	GP	W	OTW	OTL	L	GF	GA	Pts
1.	Meveščak	35	33	0	1	1	227	66	100
2.	Maribor	35	25	3	3	4	208	59	84
3.	Triglav Kranj	35	21	2	1	11	172	71	68
4.	Mladi Jesenice	35	19	2	2	12	208	89	63
5.	HK Olimpija	35	16	5	4	10	192	98	62
6.	Bled	35	16	2	2	15	155	134	54
7.	Mladost	35	14	1	2	18	152	175	46
8.	Slavija	35	8	2	2	23	140	160	30
9.	Maribor II	35	5	0	1	29	77	250	16
10.	Alfa	35	0	1	0	34	62	491	2

Play-offs

Round 1

Medveščak defeated Slavija 2–0 in a best of three series.

• Medveščak – Slavija 9–1 (2–0, 5–0, 2–1)
• Slavija – Medveščak 1–6 (0–1, 1–3, 0–2)

Maribor defeated Mladost 2–0 in a best of three series.

• Maribor – Mladost 3–1
• Mladost – Maribor 2–4 (0–1, 0–1, 2–2)

Triglav Kranj defeated Bled 2–1 in a best of three series.

• Triglav Kranj – Bled 5–3 (1–2, 4–0, 0–1)
• Bled – Triglav Kranj 6–2 (1–1, 3–1, 2–0)
• Triglav Kranj – Bled 6–0 (1–0, 4–0, 1–0)

HK Olimpija defeated Mladi Jesenice 2–0 in a best of three series.

• HK Olimpija – Mladi Jesenice 4–1 (1–1, 2–0, 1–0)
• Mladi Jesenice – HK Olimpija 1–3 (0–2, 1–0, 0–1)

Quarter-finals

Maribor defeated Triglav Kranj 2–1 in a best of three series.

• Maribor – Triglav Kranj 2–3 (0–1, 0–1, 2–1)
• Triglav Kranj – Maribor 2–3 OT (0–0, 1–0, 1–2, 0–1)
• Maribor – Triglav Kranj 7–2 (1–2, 4–0, 2–0)

Medveščak defeated HK Olimpija 2–0 in a best of three series.

• Medveščak – HK Olimpija 3–2 (0–0, 0–1, 2–1, 1–0) OT
• HK Olimpija – Medveščak 3–4 (0–1, 2–1, 1–2)

Semi-finals

Jesenice and HDD Olimpija joined in the semi-finals.

Jesenice defeated Maribor 2–0 in a best of three series.

• Jesenice – Maribor 8–2 (3–1, 4–1, 1–0)
• Maribor – Jesenice 2–3 (1–1, 1–1, 0–0, 0–1) OT

Olimpija defeated Medveščak 2–1 in a best of three series.

• Olimpija – Medveščak 0–1 (0–1, 0–0, 0–0)
• Medveščak – Olimpija 3–6 (2–2, 0–3, 1–1)
• Olimpija – Medveščak 4–1 (1–0, 2–1, 1–0)

Final

Jesenice defeated Olimpija 4–0 in a best of seven series.

• Jesenice – Olimpija 5–2 (3–0, 2–1, 0–1)
• Jesenice – Olimpija 2–1 (0–0, 1–0, 0–1, 0–0, 1–0)
• Olimpija – Jesenice 0–2 (0–0, 0–1, 0–1)
• Olimpija – Jesenice 1–2 (0–1, 0–0, 1–1)