The digital music service said the multi-platinum pop song is the most streamed track globally this year. Carly Rae Jepsen's Call Me Maybe and We Are Young by Fun are second and third, respectively.
Somebody I Used to Know was also most streamed in the United States and most shared globally, on platforms like Twitter and Facebook.
French DJ-producer David Guetta's Nothing But The Beat was the most streamed album globally. It includes hits like Titanium with Sia and Turn Me On with Nicki Minaj. Guetta is also the year's most streamed male artist.
Spotify is available in 17 countries.