The actors won the top four acting honours last year.
DiCaprio won last year for in the best actor category for his role in "The Revenant". He was previously nominated for his performances in "The Wolf of Wall Street" (2013), "Blood Diamond" (2006), "The Aviator" (2004) and "What's Eating Gilbert Grape" (1993).
Larson's performance in "Room" earned her an Oscar for Actress in a Leading Role. She has also appeared in "Trainwreck" (2015) and "Short Term 12" (2013). Her upcoming films include "Captain Marvel," "Kong: Skull Island," "The Glass Castle" and "Unicorn Store."
His other film credits include "The BFG" (2016) and the upcoming features "Dunkirk" and "Ready Player One." A prolific stage actor, he earned Tony Awards for his performances in "Twelfth Night," "Jerusalem" and "Boeing-Boeing."
Vikander won a supporting role gong for her performance in "The Danish Girl."
The Oscars, produced by Michael De Luca and Jennifer Todd and hosted by Jimmy Kimmel, will be telecast on February 26.