Theophilus Adam Wylie (1810–1895) was a Presbyterian minister, college professor, and president pro tempore of Indiana University.
Wylie entered the New Light Reformed Presbyterian Seminary, where his father was professor, and was licensed to preach in 1836.
In 1876 Theophilus installed the first telephone in the state of Indiana, built from plans sent to him from a professor at the University of Pennsylvania, that ran between his home and a college laboratory.
Additionally, Wylie began to experiment with photography soon after the daguerreotype process was invented in 1839, and held patents including ones for a galvanic cell battery.
He has labored with a zeal, and earnestness, and a devotedness which has brought him rich reward from the grateful hearts of hundreds of students, but which has left him poor indeed in other recompense."