The two singers will go head-to-head in the 'Best Female', 'Best Pop' and 'Best Look' categories. Rihanna is also nominated in the 'Biggest Fans' category, and 'We Found Love' - her collaboration with Calvin Harris - is nominated for 'Best Song' and 'Best Video'.
Swift is in contention for the 'Best Live' and 'Best World Stage' trophies.
MTV EMAs 2012 - Best Song nominees: Gotye - Somebody That I Used to Know, Carly Rae Jepsen - Call Me Maybe, Rihanna feat. Calvin Harris - We Found Love, Pitbull feat. Chris Brown International Love and Fun. feat. Janelle Monáe - We Are Young.