Koinonia may refer to:
- Koinonia, a Greek word
- Koinonia (band), a Christian jazz band
- Koinonia Christian Fellowship, a church in Bloomingdale, Ontario
- Koinonia Partners, an intentional community in Sumter County, Georgia
- Koinonia Community, a humanitarian organization in Africa
- Airdrie Koinonia Christian School, in Airdrie, Alberta