"Half of My Heart" is a 2009 song by John Mayer from his album Battle Studies featuring Taylor Swift.
Half of My Heart may also refer to:
"Half of My Heart", the love theme from the 1957 film Jeanne Eagels "Half of My Heart", a 1961 song by Emile Ford "Half of My Heart", a 2000 song by The Mooney Suzuki from People Get Ready "Half of My Heart", a 2019 song by Megan McKenna