Arrott Transportation Center is an elevated rapid transit station and bus station serving SEPTA's Market–Frankford Line and City Bus routes. It is located at the intersection of Frankford Avenue, Oxford Avenue, Arrott Street, Paul Street, and Margaret Street in the Frankford neighborhood of Northeast Philadelphia, Pennsylvania. The terminal was originally known by two separate names, Margaret–Orthodox station for the Market–Frankford Line and Arrott Bus Terminal for bus routes.

The Philadelphia trolleybus system forms part of the public transportation network serving Philadelphia, in the state of Pennsylvania, United States. It opened on October 14, 1923, and is now the second-longest-lived trolleybus system in the world. One of only four such systems currently operating in the U.S., it presently comprises three lines and is operated by the Southeastern Pennsylvania Transportation Authority (SEPTA), with a fleet of 38 trolleybuses, or trackless trolleys as SEPTA calls them. The three surviving routes serve North and Northeast Philadelphia and connect with SEPTA's Market–Frankford rapid transit line.