* ''Iris adriatica'' Trinajstic ex Mitic
* ''Iris albertii'' Reg.
* ''Iris albicans'' – White Cemetery Iris, White Flag Iris
* ''Iris alexeenkoi Grossh.
* ''Iris aphylla'' L. – Stool Iris, Table Iris and leafless Iris (including ''I. nudicaulis'')
*
*''Iris aphylla subsp. hungarica (Waldst. & Kit.) Helgi
* ''Iris attica'' (Boiss. & Heldr.) Hayek
* ''Iris benacensis'' A.Kern. ex Stapf
* ''Iris bicapitata'' Colas
* ''Iris croatica'' – Perunika I.Horvat & M.D.Horvat
* ''Iris cypriana'' Foster & Baker
* ''Iris flavescens'' Delile – Lemon-yellow Iris (= ''I. variegata''?)
* ''Iris furcata'' Bieb. – Forked Iris
* ''Iris germanica'' L. – German Iris (includes ''I. × barbata'')
* ''Iris × germanica'' nothovar. ''florentina'' Dykes
* ''Iris glaucescens'' Bunge
* ''Iris griffithii Baker
* ''Iris hellenica'' Dionysios Mermygkas, Kit Tan & Artemios Yannitsaros
* ''Iris imbricata'' Lindl.
* ''Iris junonia'' Schott ex Kotschy
* ''Iris kashmiriana'' Baker
* ''Iris lutescens'' Lam. (including ''I. italica'')
* ''Iris marsica'' I.Ricci & Colas.
* ''Iris mesopotamica'' – Mesopotamian Iris
* ''Iris orjenii'' – Orjen Iris Bräuchler & Cikovac
* ''Iris pallida'' – Sweet Iris, Dalmatian Iris Lam.
*
*''Iris pallida subsp. cengialti'' (Ambrosi ex A.Kern.) Foster
*
*''Iris pallida subsp. illyrica'' (Iris illyrica) (Tomm. ex Vis.) K.Richt.
* ''Iris perrieri'' Simonet ex P.Fourn.
* ''Iris pseudopumila'' Tineo
* ''Iris pumila'' L.
* ''Iris purpureobractea'' B.Mathew & T.Baytop
* ''Iris relicta'' Colas.
* ''Iris reichenbachii'' Heuff. – Reichenbach's Iris
* ''Iris revoluta'' Colas.
* ''Iris sambucina'' L.
* ''Iris scariosa'' Willd. ex Link
* ''Iris schachtii'' Markgr.
* ''Iris setina'' Colas.
* ''Iris suaveolens'' Boiss. & Reut. (including ''I. iliensis'')
* ''Iris subbiflora'' Brot.
* ''Iris taochia'' Woronow ex Grossh.
* ''Iris timofejewii'' Woronow
* ''Iris variegata'' L. – Hungarian Iris

Section ''Oncocyclus''
* ''Iris acutiloba'' C.A.Mey. (including ''I. ewbankiana'')
* ''Iris antilibanotica'' Dinsm.
* ''Iris assadiana'' Chaudhary, Kirkw. & C.Weymolauth
* ''Iris atrofusca'' Baker
* ''Iris auranitica'' Dinsm.
* ''Iris atropurpurea'' Baker
* ''Iris barnumae'' Baker & Foster
* ''Iris basaltica'' Dinsm.
* ''Iris bismarckiana'' Reg. – Nazareth Iris
* ''Iris bostrensis Mouterde
* ''Iris camillae'' Grossh.
* ''Iris cedreti'' Dinsm. ex Chaudhary
* ''Iris damascena'' Mouterde
* ''Iris gatesii'' Foster
* ''Iris grossheimii'' Woronow ex Grossh.
* ''Iris haynei'' (Baker) Mallet. – Gilboa Iris
* ''Iris hermona'' Dinsm. – Hermon Iris
* ''Iris heylandiana'' Boiss. & Reut.
* ''Iris iberica'' Hoffm.
*
*''Iris iberica subsp. elegantissima'' (Sosn.) Fed. & Takht.
*
*''Iris iberica subsp. lycotis'' (Woronow) Takht.
* ''Iris kirkwoodi'' (including ''I. calcarea'')
* ''Iris lortetii'' Barbey ex Boiss.
*
* ''Iris lortetii var. samariae'' (Dinsm.) Feinbrun
* ''Iris mariae'' Barbey.
* ''Iris meda'' Stapf
* ''Iris nigricans'' Dinsm.
* ''Iris nectarifera'' Güner
* ''Iris paradoxa'' Steven
* ''Iris petrana'' Dinsm.
* ''Iris polakii'' Stapf
* ''Iris sari'' Schott ex Bak.
* ''Iris schelkownikowii Fomin
* ''Iris sofarana'' Foster
* ''Iris sprengeri'' Siehe
* ''Iris susiana'' L. – Mourning Iris
* ''Iris swensoniana'' Chaudhary, G.Kirkw. & C.Weymouth
* ''Iris westii Dinsm.
* ''Iris yebrudii Dinsm. ex Chaudhary
Section ''Hexapogon''
* ''Iris falcifolia'' Bunge
* ''Iris longiscapa'' Ledeb.
Section ''Psammiris''
* ''Iris arenaria'' Waldst. & Kit.
* ''Iris bloudowii'' Ledeb.
* ''Iris curvifolia'' Y.T.Zhao
* ''Iris humilis'' Georgi
* ''Iris kamelinii'' Alexeeva
* ''Iris mandschurica'' Maxim.
* ''Iris potaninii'' Maxim.
* ''Iris vorobievii'' N.S.Pavlova
Section ''Pseudoregelia''
* ''Iris cuniculiformis'' Noltie & K.Y.Guan
* ''Iris dolichosiphon'' Noltie
* ''Iris goniocarpa'' Bak.
* ''Iris hookeriana'' Fost.
* ''Iris ivanovae'' Doronkin
* ''Iris kemaonensis'' Wall.
* ''Iris leptophylla'' Lingelsheim
* ''Iris narcissiflora'' Diels.
* ''Iris sikkimensis'' Dykes
* ''Iris tigridia'' Bunge ex Ledeb.
Section ''Regelia''
* ''Iris afghanica'' Wendelbo
* ''Iris darwasica''Regel
* ''Iris heweri'' Grey-Wilson & Mathew
* ''Iris hoogiana'' Dykes
* ''Iris korolkowii'' Regel
* ''Iris kuschkensis'' Grey-Wilson & Mathew
* ''Iris lineata'' Foster ex Regel
* ''Iris stolonifera'' Maxim.