Former European champion pole vaulter Anzhelika Sidorova, sprinter Kristina Sivkova and hammer thrower Aleksei Sokirskii have all had their applications approved by the governing body's Doping Review Board.
The trio have all been deemed to comply by the Doping Review Board, comprised of chairman Robert Hersh, Sylvia Barlag and Antti Pihlakoski (no Russians).
The three accepted athletes' right to compete is still subject to acceptance by themselves and competition organisers.
http://www.insidethegames.biz/articles/1047402/iaaf-clears-three-russians-to-compete-as-neutral-athletesThe entry deadline for the 2017 European Indoor Championships is today.
Action in the Serbian capital will take place between March 3 and 5.
The Throwing Cup on the Spanish Island will be held between March 11 and 12.
Sidorova won her European title in Zurich in 2014 and also won the European Indoor crown in Prague last year.
It means she will likely head to Belgrade as the defending champion.
Sivkova won 4x100 metres bronze in Zurich.