- YNWA ehf.
54930052U80QQVJKOR28Kópavogi
- Yrki ehf.
6488LQH185G3N79U0D41Kópavogur
- Yrsa Sigurðardóttir ehf
549300TWYVNGUYWT1I15Seltjarnarnes
- Ysti-Skáli ehf.
6488NNUG0M65O778G489Hvolsvöllur
- Yxnhamar ehf.
9845000A9B363D89KF18Patreksfjörður
- ZAP ehf.
984500F3O6FBAD92B626Reykjavík
- Zarnik ehf.
254900F3VYO00GXGNB24ReykjavikLapsed - not renewed
- Zeda ehf.
254900XMOYFB1LFSPO40Kopavogur
- Zeres ehf.
636700EBHM97N581CL60Garðabæ
- Zilli ehf.
549300KS0WWWFNTEZV80Kópavogur
- Zukunft ehf.
549300RMZU53SZJXPB90Reykjavík
- ZX ehf
636700JI0A8V2RRK7431ÞorlákshöfnLapsed - not renewed
- Zym Ice hf.
254900UMX0YWEAX97874Hafnarfjordur
- Þ12 ehf.
6367007J9Y6BB7EYTT72Kópavogur
- Þ4 ehf.
984500C03ID4E0B02D40ReykjavíkLapsed - not renewed
- Þ.A.K.A. ehf.
2549009J0TURZKJVHT53AkureyriLapsed - not renewed
- Þak ehf
5493003SPM16SDVQZY34Reykjavík
- þakrennuverk ehf.
636700668SWJMPPLLL09GarðabærLapsed - not renewed
- Þaktak ehf.
984500EF6407AUB63E18Reykjavík
- þakvinna ehf.
549300WX3B8XYLCZR176Reykjavík
- Þanki ehf.
254900BCD9V278ES0G95Reykjavik
- Þarabakki ehf
549300MLZFO288GM3D49Reykjavík
- ÞAÞ Eignir ehf.
636700B39IG3VL0WIM08ReykjavíkLapsed - not renewed
- ÞE Eignir ehf.
6488915Z4RMBH9T64Q28Akranes
- Þegjandi ehf
25490056UJ2HU2FNMQ42HellisandurLapsed - not renewed
- Þeir bræður Ehf.
2549006DMCY0Y5YVTY43Kopavogur
- Þekkingarmiðlun ehf.
5493007HZ1I7HVUW3483Garðabær (Álftanes)
- Þ.G. fasteignir ehf.
254900NWTN4XFMYIB473EgilsstadirLapsed - not renewed
- Þ & G sf.
5493007QRQ6SZNT9KT62Reykjanesbær
- ÞG verktakar ehf.
6367000MOPECL1RH5B53Reykjavík
- Þingeyrabúið ehf.
549300RYODGFC1E5FK37Blönduós
- Þinghóll 63 ehf.
64885OIWEP450E1F0983Kópavogur
- Þingnes ehf.
25490091WQCPU2VDDU95Reykjavik
- Þitt Öryggi ehf.
636700M56KTII5G1YY35Reykjavík
- Þjóðkirkjan
549300B6EEIPIB2WMM28Reykjavík
- Þjóðminjasafn Íslands
98450044D05B4111FD42Reykjavík
- Þjóðráð ehf.
549300QZ7Q5XVFNHLA08Reykjavik
- Þjótandi ehf.
9845007YA6FC81FFBF02Hella
- ÞK fjárfestingar ehf.
5493008P0F06L6YOEY40Reykjavík
- Þollur ehf
549300QP1O4ARNQQPW59BakkafjörðurLapsed - not renewed
- Þóra Gunnarsdóttir ehf.
6488I1J6BF9B56V6C104Reykjavik
- Þorbjörn hf.
549300HE47YEWZELUR74GrindavíkLapsed - not renewed
- Þórður Ásmundsson ehf.
254900DM9Q6A3ZYULX40Reykjavik
- Þór fjárfestingar ehf.
9845006A6FE9648M5T02Kópavogur
- Þór hf.
636700LHQH75N5N58R45Reykjavík
- Þórisson ehf.
636700SAZM4LE4J35T05Garðabær
- Þormar ehf.
636700C6TB57BBT6WJ33Kópavogi
- Þorrasalir ehf
254900JBIJ8765PFXQ25HafnarfjordurLapsed - not renewed
- Þórsá ehf.
63670040K9FC15I81483Garðabæ
- Þorsnes ehf.
2549007PPBVFINMZ3F35Stykkisholmur
- Þorsteinn Loftsson ehf.
636700TKDD4YHI3YNY95Reykjavík
- Þorsti ehf.
549300IFP7O4U8OUBT36KópavogurLapsed - not renewed
- Þórukot ehf.
984500158SY976FE9E82Reykjanesbær
- Þorvaldur K. Þorsteinsson ehf.
549300WNMHPSKZZKPW32Reykjavík
- Þrasaborg ehf.
636700SIORMK2ACABU31Kópavogur
- Þrastarás ehf.
6488R5O3DU3255Q0BW22ReykjavíkLapsed - not renewed
- Þrastaþing ehf.
254900OL2N6HVN7JZA63Gardabaer
- Þríhamrar ehf.
254900KKW3NUXBCVO794Kopavogur
- Þroskahjálp Norðurlandi eystra
636700TY8HXD8R4BW333Akureyri
- Þröstur Þórhallsson slf.
636700Z4OBGCUMPKJ873ReykjavíkLapsed - not renewed
