Kenneth D. Loeffler (April 14, 1902 – January 1, 1975) was an American collegiate and professional basketball coach.

After earning a Bachelor's degree at Pennsylvania State University (1920–24) and a short pro basketball career (1924–29), the Beaver Falls, Pennsylvania native began his collegiate coaching career at Geneva College (1928–35).

After the war Loeffler began coaching pro teams in the Basketball Association of America, first the St. Louis Bombers (1946–48), then the Providence Steamrollers (1948–49).

With players like future Hall of Famer Tom Gola, Loeffler's La Salle teams went on to dominate college basketball over half a decade in the early 1950s.

Under Loeffler, La Salle made four trips to the NIT (before it was considered "second-rate") and two visits to the NCAA tournament.