John Sidney McCain III (born August 29, 1936), the senior United States Senator from Arizona and the Republican nominee for president in the 2008 United States election, can refer to the following alternate realities:
- John McCain, the 41st President of the United States (FDRs Two Term Presidency)
- John McCain, the 50th Vice President of the United States (Losers Become the President)
- John McCain, the 43rd President of the United States (President McCain)
- John McCain, the 44th President of the United States (Step in a Different Direction)
- John McCain, the 44th President of the United States (President Welles)
- John McCain, the 46th Vice President and the 44th President of the United States (President Hendrix)
- John McCain, the 46th Vice President of the United States (An Independent in 2000)
- John McCain, the 29th President of the Confederate States (The Found Order)
- John McCain (How many Sixes does Adolf Nazi have to Roll?)
