Isaac J. Lansing (1846–1920) was the president of Clark Atlanta University from 1874 to 1876, and the pastor at Park Street Church in Boston, Massachusetts from 1893 to 1897.

[1][2] He served as a Methodist Episcopal minister in the New York East, Georgia, and Savannah Conferences from 1873 to 1886.

During this period, Lansing was appointed President of Clark Atlanta University in 1874 and served until 1876.

He served also as acting Assistant Secretary of the Freedmen's Aid Society of the Methodist Episcopal Church from 1876 to 1878.

Lansing served as pastor at Park Street Church in Boston, Massachusetts from 1893 to 1897.