Tracy McMillan (born September 12, 1964) is an American author, television writer, TV host, and self-proclaimed relationship expert. She wrote television news for 15 years and transitioned into writing film, television, and books.

In 2011, she wrote a blog post called WHY YOU’RE NOT MARRIED, which went viral and is now the most-viewed article on the Huffington Post ever. Time magazine named it one of the Top Ten Opinion Pieces of 2011.  She also wrote a book based on it, Why You're Not Married... Yet (2012).