Collett grew up in Copenhagen, and studied at the University of Copenhagen.
Johan Christian Fabricius | Johan Galtung | Jason Collett | Johan Petter Johansson | Johan Norberg | Johan Niclas Byström | Johan Museeuw | Johan Henric Kellgren | Johan de Witt | Johan Jeremiassen | Johan Gunnar Andersson | Johan Cruyff | Johan Bojer | Nils Johan Berlin | Johan Wohlert | Johan Vande Lanotte | Johan Svendsen | Johan Reinhard | Johan Jakobsson | Johan Ferrier | Johan Falkberget | Johan de Meij | Johan Banér | Ole-Johan Dahl | Lars Johan Hierta | Johan van Oldenbarnevelt | Johan Skytte Prize in Political Science | Johan Martin Preisler | Johan Lundbye | Johan Hultin |
He represented Buskerud at the Norwegian Constituent Assembly at Eidsvoll in 1814, together with Frederik Schmidt who was vicar of Eger and Johan Collett who was County Governor of Buskerud.