Abraham Lincoln was the first president to be assassinated as he was fatally shot by John Wilkes Booth on April 14, 1865.
Ames Garfield was targeted in an assassination plot when he headed to board a train to New England when he was fatally shot by Charles Guiteau.
Andrew Jackson experienced an assassination attempt on January 30, 1835, by an unemployed house painter named Richard Lawrence.
Theodore Roosevelt wasn't a president of the US when an assassination attempt took place. He was shot by John Flammang Schrank.
Franklin D Roosevelt, then president-elect was attacked by Giuseppe Zangara in 1933 in Miami, Florida.
Harry S Truman was staying at Blair House when two Puerto Rican nationalists tried to kill him.