In Better Call Saul, what does the law-firm abbreviation HHM stand for?

In Better Call Saul, HHM stands for Hamlin Hamlin & McGill.

Hamlin Hamlin & McGill is the prestigious Albuquerque law firm founded by George M. Hamlin and Charles McGill, Chuck’s father and Jimmy’s older brother. Howard Hamlin later becomes the firm’s public face and a leading partner, even though the name remains unchanged.

The firm is central to the series because Chuck works there, Jimmy struggles to be accepted by its legal establishment, and Kim Wexler builds her career within and alongside it. The repeated “Hamlin” reflects the firm’s founding partnership structure rather than two different present-day characters. Howard’s first name is not part of the abbreviation, despite his prominence at the firm.