|Thomas Jefferson's head|
|Species|| Formerly: Human|
Currently: Head in Jar
|Profession||Formerly: President of the United States|
|First appearance||When Aliens Attack|
|Voiced by||Phil LaMarr|
Thomas "Tom" Jefferson (April 13, 1743 – July 4, 1826) was the third President of the United States from 1801 to 1809. By 2999, his still living head was preserved and on display in the Head Museum in New New York City.
- "When Aliens Attack" (on Mount Rushmore)
- "A Head in the Polls"
- "The Day the Earth Stood Stupid" (mentioned only)
- "All the Presidents' Heads"