Eugene Lodewick Grant (February 15, 1897 – July 9, 1996), was an American civil engineer and educator. He graduated with a BS from the University of Wisconsin in 1917. He started teaching in 1920 at Montana State University and then in 1930 at the School of Engineering, Stanford University where he taught until 1962. He is known for his work in Engineering Economics with his textbook first published in 1930. Grant was the intellectual heir of work performed by John Charles Lounsbury Fish who published Engineering Economics: First Principles in 1923, providing the critical bridge between Grant and the pioneering effort of Arthur M. Wellington in his engineering economics work of the 1870s.