Gazaway Bugg Lamar (1798–1874) was an American merchant in cotton and shipping in Savannah, Georgia, and a steamboat pioneer. He was the first to use a prefabricated iron steamboat on local rivers, which was a commercial success. In 1846 he moved to New York City for business, where in 1850 he founded the Bank of the Republic on Wall Street and served as its president. He served both Southern businesses and state governments. After the start of the American Civil War, Lamar returned to Savannah, where he became active in banking and supporting the confederate war effort in several ways. With associates, he founded the Importing and Exporting Company of Georgia, which operated blockade runners.