Dogecoin ( DOHJ-koyn or DOHZH-koyn, Abbreviation: DOGE; sign: Ð) is a cryptocurrency created by software engineers Billy Markus and Jackson Palmer, who decided to create a payment system as a joke, making fun of the wild speculation in cryptocurrencies at the time. It is considered both the first "meme coin", and more specifically the first "dog coin". Despite its satirical nature, some consider it a legitimate investment prospect. Dogecoin features the face of Kabosu from the "doge" meme as its logo and namesake. It was introduced on December 6, 2013, and quickly developed its own online community, reaching a peak market capitalization of over US$85 billion on May 5, 2021. As of 2021, it is the sleeve sponsor of Watford Football Club.

Dogecoin.com promotes the currency as the "fun and friendly Internet currency", referring to its origins as a "joke". Software engineers Markus and Palmer launched the satirical cryptocurrency as a way to make fun of Bitcoin and the many other cryptocurrencies boasting grand plans to take over the world. Dogecoin quickly gained traction, particularly on social platforms like Reddit. Within two weeks of launch, it had established a dedicated blog and forum and its market value reached $8 million, once jumping to become the seventh largest electronic currency in the world.