Bedrift J - Lier
- Jåle AS
- Jåla AS
- Jbc AS
- Jumili AS
- Jofix AS
- Johansen Bjørn
- Justads Genistrek
- Johansen Marit
- Johansen Sport
- Jerico Holding AS
- Jacobsen Elektro AS
- Jarlev Konsultasjoner
- Jrk Papuls
- Juveng Helsekonsult
- Jm Fredriksen
- JS Renhold AS
- Jodal Holding AS
- Jafu Holding AS
- Jf Maskin AS
- Jit Holding AS
- Jolin Accounting AS
- Jit Tjenester AS
- Japa Bygg AS
- Jancz Performance
- Juraj Pekarik
- Jordbærkollen Holding AS
- Ja9 Invest AS
- Julin Råd AS
- Jan Hasse Utengen
- Johansen Thomas Opsahl
- John Volden Holding AS
- Jan Erik Klevstad
- Jan Arve Dale
- Jack Johnson Holding AS
- Jølstad Begravelsesbyrå Lier
- Jonas Bjerck Sundet
- Jonsson Folkestad Software AS
- Jon-Andre Fladby
- Jørgen Hårberg Jensrud
- Jan Anders Marheim AS
- Japa Bygg Holding AS
- Japa Bygg Invest AS
- Jan Rune Fuglerud
- Jacobsen Elektro Consult
- Jonas Røe Ballestad
- Jrinnotech Jakub Rzepka
- Jonas Aakre Konsultasjon
- Jordbærkollen Barnehage SA
- Jss Lier Invest AS
- Joint-Venture Holding AS
- Jensen Hans K Bjørnstad
- Jst Tak og Blikk AS
- Jb Transport Juris Blinkovs
- Jorun Marie Langli Orby
- Jørgen J. Mahle Dahlgren
- Joanna Kasprowicz Lami Brows & Lashes
- Jardar Vigre Gundersen Fysioterapi og Coaching