Marshall Francis McComb (May 6, 1894 – September 5, 1981) was an American jurist who served as an associate justice of the Supreme Court of California from January 1956 to May 2, 1977.

[5][6] In 1927, California Governor C. C. Young appointed McComb a Judge of the Superior Court of Los Angeles County, where he served until March 1937.

Then, Governor Frank Merriam elevated McComb to the California Court of Appeal for the Second District as an associate justice in Division Two, where he served from March 13, 1937 to January 1956.

[6] On February 18, 1932, both McComb and fellow future justice B. Rey Schauer were commissioned as officers in the United States Naval Reserve.

[9][10] In 1968, McComb joined the dissenting opinion of Justice Louis H. Burke in Dillon v. Legg, in which the Court's majority established the tort of negligent infliction of emotional distress; Burke and McComb argued that the majority ruling opened up defendants to "potentially infinite liability beyond any rational relationship to their culpability.

[15] In 1976, McComb joined Justice William P. Clark, Jr.'s dissenting opinion in Tarasoff v. Regents of the University of California, as McComb and Clark argued that doctor-patient confidentiality was "essential to effectively treat the mentally ill, and that imposing a duty on doctors to disclose patient threats to potential victims would greatly impair treatment" while the majority held that mental health professionals have a duty to protect individuals who are being threatened with bodily harm by a patient.