SIK
| Acronym | Definition |
|---|---|
| SIK | Stuck in Kansas |
| SIK | Someone I Know (chat slang) |
| SIK | Sähköinsinöörikilta (Finnish: Guild of Electrical Engineering) |
| SIK | Subsistence-In-Kind |
| SIK | Senter for Interkulturell Kommunikasjon (Norwegian: Center for Intercultural Communication) |
| SIK | Sit-in Kayak |
| SIK | Sulinermik Inuussutissarsiuteqartut Kattuffiat (Kalaallisut: Greenland Workers Union) |
| SIK | Sturdy Iron Key (Asheron's Call game) |
| SIK | Sporting International Karaté-Club (France) |
| SIK | Self-Installation Kit (cable) |