Robert Logan (March 14, 1861 – July 22, 1918) was a Scottish naval architect. He was a university graduate of mathematics, science, and engineering. Logan designed and constructed several large ships for various shipbuilding firms worldwide. His first ones were passenger cruise excursion boats and later constructed freighter ships for the American Shipbuilding Company that carried railroad trains across Lake Michigan. He designed the world's first steel train ferry, followed by several more Logan boats that ultimately developed into the world's largest carferry fleet that operated out of Ludington, Michigan.