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

Look up trillium in Wiktionary, the free dictionary.

The white trillium (Trillium grandiflorum) has been Ontario's official floral emblem since 1937.

• Trillium Book Award, a literature prize sponsored by the Government of Ontario
• Trillium Gift of Life Network, government agency regulating organ donation in Ontario
• Trillium Health Partners, a group of three hospitals serving Mississauga and western Toronto
• Trillium Line, a Diesel-powered light-rail line in Ottawa
• Trillium Park, a provincial park in Toronto
• Trillium Party of Ontario, a social conservative political party in Ontario
• Trillium Railway, a Canadian short-line railway operating in the Niagara Region of Ontario

• PS Trillium, passenger ferry on Lake Ontario
• HMCS Trillium, Royal Canadian Navy vessel
• Trillium-class freighter - class of bulk carriers owned by Canada Steamship Lines

• Trillian (disambiguation)
• Trillion (disambiguation)

This disambiguation page lists articles associated with the title Trillium.
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