Biphobia is a term used to describe aversion felt toward bisexuality and bisexual people as a social group or as individuals. People of any sexual orientation can experience such feelings of aversion. A source of discrimination against bisexuals, biphobia is based on negative bisexual stereotypes and bisexual erasure.

Biphobia is a portmanteau word patterned on the term homophobia. It is derived from the English neo-classical prefix bi- (meaning "two") from bisexual and the root -phobia (from the Greek: φόβος, phóbos, "fear") found in homophobia. Along with transphobia, homophobia and biphobia are members of the family of terms used when intolerance and discrimination is directed toward LGBT people. Note that biphobia need not be an equivalent to the clinical or medical meaning of a phobia – an anxiety disorder. Instead, its meaning and use typically parallel those of xenophobia. The adjectival form biphobic is used to describe things or qualities related to biphobia whereas the noun biphobe is a label for people thought to harbor biphobia.

Daniel Keenan "Dan" Savage (born October 7, 1964) is an American author, media pundit, journalist and newspaper editor. Savage writes the internationally syndicated relationship and sex advice column Savage Love. Its tone is frank in its discussion of sexuality, often humorous, and hostile to social conservatives and Rick Santorum's views on homosexuality. Savage has clashed with cultural conservatives on the right, and the gay establishment, on the left. He has also worked as a theater director, both under his real name and under the name Keenan Hollahan, using his middle name and his grandmother's maiden name. In 2010, Savage and his husband Terry Miller began the It Gets Better Project to help prevent suicide among LGBT youth.

Dan Savage was born to William and Judy Savage in Chicago, Illinois. He is of Irish ancestry. The third of four children, Savage was raised as a Roman Catholic and attended Quigley Preparatory Seminary North, which he has described as "a Catholic high school in Chicago for boys thinking of becoming priests." Though Savage has stated that he is now "a wishy-washy agnostic" and an atheist, he has said that he still considers himself "culturally Catholic."