Presidents who were Episcopalian

Here is the list:

1. George Washington
2. Thomas Jefferson
3. James Madison
4. James Monroe
5. William Henry Harrison
6. John Tyler
7. Zachary Taylor
8. Franklin Pierce
9. Chester A. Arthur
10. Franklin D. Roosevelt
11. Gerald Ford
12. George H. W. Bush

Others also mentioned:

Theodore Roosevelt was a member of the Dutch Reformed Church but his wife was Episcopalian and he often attended Episcopal Churches.

And our current president:

George W. Bush was raised Episcopalian, but is now a member of the United Methodist Church.

Sources:

http://en.wikipedia.org/wiki/Presidents_of_the_United_States_by_religion
http://www.adherents.com/adh_presidents.html