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MAC ID is a unique, common identifier enabling single sign-on for a number of McMaster systems and applications. Your MAC ID is not your employee or student number.

Getting Started

So, you are new to McMaster, and you've been given this thing called a "MAC ID". Now what? In the Getting Started section you will be able to do the following:

Ongoing Maintenance

From time to time, your account will need a little attention. In the Ongoing Maintenance section, you will be able to do the following. Click here for the MAC ID password strength requirement.

Service Bulletins

  • MAC ID Password Expiry

    Beginning in May 2016, MAC ID passwords at McMaster expire annually. Learn more at

Service Desk

Client Self Service:
Hours: Monday - Friday
8:30 am - 4:30 pm
Phone: 905-525-9140 x24357 (2HELP)
Location: Main Campus BSB Rm. 245
Service Catalogue:

Great Idea Site

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