Following lengthy negotiations, the Italian club have acquired Muriqi on a long-term contract.
The Biancocelesti have paid €17.5m up-front with a further €2.5m to follow in bonuses.
In addition, Fenerbahce will receive 5% of any future transfer fee.
— S.S.Lazio (@OfficialSSLazio) September 15, 2020
Lazio have been pursuing Muriqi for much of the summer and Simone Inzaghi finally has his attacking reinforcement.
Muriqi scored 17 goals in all competitions for Fenerbahce last season and delivered seven assists.