The Pakistan Football Federation League B Division (Urdu: پاکستان فٹ بال فیڈریشن لیگ; abbreviated: PFFL) is a Pakistani professional league for men's football departments and clubs which are in the Pakistan football league system, and is the country's second-tier competition. Contested by 18 departments and clubs, it operates on a system of promotion and relegation with the top-tier Pakistan Premier League.
Each season, the two top-finishing teams from the PFFL's club phase and the departmental phase are automatically promoted to the Pakistan Premier League, and the winner of the final between club phase and departmental phase is crowned the PFF League champion.
The PFF League was founded in 2004 to serve as the second division for the newly re-branded Pakistan Premier League. The league's name was originally planned as 'National League Division B'.
Its inaugural season was won by National Bank and Pakistan Public Works Department were the runners-up. Baloch Quetta is the team that has spent the most time in the PFF League, a total of 9 nine seasons.
In February 2020, after six years, Pakistan Football Federation announced the 2020 edition of the PFF League to be held across 4 cities (Quetta, Faisalabad, Karachi, and Lahore).