The Commentary on the Mishnah has not been translated into English in its entirety. However, there are translations of Maimonides' introduction to Pirqe Aboth called "The Eight Chapters." English translation of Eight Chapters, Introduction to Commentary on Avoth by Joseph Isaac Gorfinkle, New York: Columbia UP, 1912.
Commentary on Mishnah
Torah as Political Philosophy
Edward Halper, “Torah as Political Philosophy: Maimonides and Spinoza on Divine Law,” in Judaic Sources and Western Thought: Jerusalem's Enduring Presence, edited by Jonathan Jacobs, pp. 190-214. Oxford: Oxford University Press, 2011.
The Limits of Orthodox Theology: Maimonides’ Thirteen Principles Reappraised
Shapiro, Marc. The Limits of Orthodox Theology: Maimonides’ Thirteen Principles Reappraised. Oxford, UK & Portland, Or., 2004.
Prophecy: The History of an Idea in Medieval Jewish Philosophy
Kreisel, Howard. Prophecy: The History of an Idea in Medieval Jewish Philosophy. Dordrecht, 2001.
Maimonides
Kraemer, Joel L. “Maimonides.” Judaism in Practice. ed. L. Fine: 413-28.
Maimonidean Halakhah and Superstition
Shapiro, Marc. “Maimonidean Halakhah and Superstition.” Maimonidean Studies 4 (2000): 61-108.
The Last Word in Jewish Theology? Maimonides’ Thirteen Principles
Shapiro, Marc. “The Last Word in Jewish Theology? Maimonides’ Thirteen Principles.” The Torah u-Madda Journal 4 (1993): 187-242.
Maimonides’ Ethics: The Encounter of Philosophic and Religious Morality
Weiss, Raymond L. Maimonides’ Ethics: The Encounter of Philosophic and Religious Morality. Chicago, 1991.
Dogma in medieval Jewish thought: from Maimonides to Abravanel
Kellner, Menachem. Dogma in medieval Jewish thought: from Maimonides to Abravanel. Oxford & New York, 1986.
The Obligation of Talmud on Women According to Maimonides
Harvey, Warren Ze’ev. “The Obligation of Talmud on Women According to Maimonides.” Tradition 19 (1981): 122-30.