Transilien Line P is a railway line of the Paris Transilien suburban rail network. The trains on this line travel between Gare de l'Est in central Paris and the east of ÃÂle-de-France region. Transilien services from Paris-Est are part of the SNCF Gare de l'Est rail network. They have a total of 83,000 passengers per weekday.
The first sections of the Paris-Est network opened on 3 January 1849, they were reorganized into Transilien Line P on 31 December 2004.
Translilien Line P formerly included a branch from Esbly to Crécy-la-Chapelle, operated as a self-contained service with tram-train vehicles. In 2025, this branch was administratively separated from Line P and rebranded as tramway line T14.
Line P is operated by the five following services:
Line P uses a four-letter mission coding system. Only in the section between Paris-Est and Chateau-Thierry the trains display the mission code; otherwise they only appear on passenger information display systems and on timetables.