T. Y. Lin International
| Company type | Private | 
|---|---|
| Industry | Civil and Structural Engineering | 
| Founded | June 1, 1954 | 
| Headquarters | San Francisco, California, US | 
| Key people | 
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| Website | Official website | 
TYLin is a global, multi-disciplinary infrastructure services firm. Headquartered in San Francisco, California, TYLin established its business in the design of long-span bridges and specialty structures.
The firm provides a range of planning, design, construction and project management services to the aviation; bridge; facilities; mobility, planning, and management; ports and marine; rail and transit; and surface transportation industries. TYLin operates from more than 50 regional centers across four continents, and employs a professional staff of more than 3,000 engineers, planners, architects and scientists.