Other
- Grattan Bridge, a road bridge spanning the River Liffey in Dublin, Ireland
- Grattan massacre, 1854 incident between the U.S. army and the Brulé Lakota (Sioux)
- Grattan plc, a British catalogue clothing retailer
- Grattan Stadium, sponsored name of Odsal Stadium, home of Bradford Bulls Rugby League Football Club, in Bradford, England,
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