Andrew Cargill Macmillan
- Type: Pusher tug w/ barges
- Displacement: 1,022 grt
- Dimensions: 190' x 54'
- Machinery: 3 GM 20-645 E7B diesels, triple screw Kort nozzles; 10,500 bhp = knots
- Builder: Dravo Co., Neville Island, PA, 1975
- Service: Built as Argonaut for Union Mechling Co., Pittsburgh, PA. Transferred Jan 1980 to Dravo Mechling Co., New Orleans, LA. Sold Feb 1988 to National Marine Service Inc., New Orleans, LA. Sold Dec 1991 to Hugh Mac Towing Co., Slidell, LA, and renamed Andrew Cargill Macmillan. Sold Mar 1998 to American River Transportation, St. Louis, MO. Still in service.