Look up trillium in Wiktionary, the free dictionary.
Trillium is a genus of flowering plants. It may also refer to:
- Trillium Brewing Company, an American brewery
- Trillium CNG, a subsidiary of WEC Energy Group
- Trillium Corporation, the former name of Telarium, a publisher of adventure games in the 1980s
- Trillium Cup, an annual two-team cup rivalry between Major League Soccer's Toronto FC and the Columbus Crew
- Trillium Digital Systems, a software company providing portable communications software products
- Trillium Model, a software engineering model for telecommunications systems
- Trillium (Buckeye), a planned community in Buckeye, Arizona, US
- Trillium (series), a series of fantasy novels by Andre Norton, Marion Zimmer Bradley and Julian May
- Trillium (Vertigo), an 8-issue comic series by Jeff Lemire
- Trillium Software, a suite of software products from Harte Hanks
- Telereal Trillium a British property company
- Trillium, a heavy metal band founded and fronted by Amanda Somerville
- Trillium, imprint of Ohio State University Press