John Nolen (June 14, 1869 – February 18, 1937) was an American landscape architect, planning consultant, founding member of the American City Planning Institute and a writer. Born in Philadelphia, Pennsylvania, Nolen was orphaned as a child and placed in Girard College. After he graduated first in his class in 1884, he worked as a grocery clerk and secretary to the Girard Estate Trust Fund before enrolling in the Wharton School of Finance and Economics at the University of Pennsylvania in 1891. Nolen earned a Ph.B. in 1893, and for the next ten years worked as secretary of the American Society for the Extension of University Teaching. He married Barbara Schatte in 1896.