Alexander Crombie Humphreys (30 March 1851 – 14 August 1927) was a Scottish American mechanical and consulting engineer, along with a water-gas plant builder,[1] and the 2nd President of Stevens Institute of Technology in Hoboken, New Jersey.

He later became superintendent of the Bayonne and Greenville Gas Light Company and attended Stevens Institute of Technology earning his degree in mechanical engineering; he graduated in 1881.

Following the death of Henry Morton in 1902, the board of trustees of Stevens Institute of Technology unanimously called upon Humphreys to serve his Alma mater as president.

[11] As a homage to his predecessor, Humphreys campaigned for the creation of the Morton Memorial Chemistry Laboratory and commissioned a book on Stevens' founding and its early years to be named in his honor.

During the growth of the institute, Alexander C. Humphreys felt it important to impart engineering students with a sense of business – a tool that would be essential in their success in all lines of manufacturing.

[14] Humphreys was very adamant that the creation of such a system come from the students and on the first page of the first issue of the school newspaper "The Stute" appeared an article written by a junior urging the implementation of such.

Upon Humphreys' recommendation, faculty were also required to abide by such a pledge in administering exams within Honor Board guidelines on the grounds that it is a "...proviso apply[ing] to the examiner as well as to the student".