List of Major shareholders of McDonalds?

For any public company in the U.S., the easiest thing to do is to go to the SECs website and run a search:

http://www.sec.gov/edgar/searchedgar/companysearch.html

Once the results come up for the company you want, narrow them to show only form DEF 14a. This is the proxy statement, which will show (among other things) major shareholders. Use the most recent one:

http://www.sec.gov/Archives/edgar/data/63908/000119312510080079/ddef14a.htm#toc84155_23

Click through a few links to get to the proxy statement, and then search for the phrase "security ownership" using CTRL+F. You'll jump to the section with a table showing anyone who owns more than 5% of the company - these are considered "major shareholders". It'll have the amount and percentage of the company they own.