This is a list of Nudibranchia of Ireland. It is part of the List of marine molluscs of Ireland.
Order NUDIBRANCHIA
- Goniodoris castanea Alder & Hancock, 1845
- Goniodoris nodosa Montagu, 1808
- Okenia elegans Leuckart, 1828
- Okenia leachii Alder & Hancock, 1854
- Ancula gibbosa Risso, 1818
- Trapania pallida Kress, 1968
- Onchidoris bilamellata Linnaeus, 1767
- Onchidoris depressa Alder & Hancock, 1842
- Onchidoris muricata O F Müller, 1776
- Onchidoris oblonga Alder & Hancock, 1845
- Onchidoris pusilla Alder & Hancock, 1845
- Onchidoris sparsa Alder & Hancock, 1846
- Diaphorodoris luteocincta M Sars, 1870
- Acanthodoris pilosa Abildgaard in O F Müller, 1789
- Adalaria loveni Alder & Hancock, 1862
- Adalaria proxima Alder & Hancock, 1854
- Crimora papillata Alder & Hancock, 1862
- Aegires punctilucens Orbigny, 1837
- Polycera faeroensis Lemche, 1929
- Polycera quadrilineata O F Müller, 1776
- Greilada elegans Bergh, 1894
- Limacia clavigera O F Müller, 1776
- Palio dubia M Sars, 1829
- Palio nothus Johnston, 1838
- Thecacera pennigera Montagu, 1813
- Cadlina laevis Linnaeus, 1767
- Aldisa zetlandica Alder & Hancock, 1854
- Rostanga rubra Risso, 1818
- Doris sticta Iredale & O'Donoghue, 1923
- Archidoris pseudoargus Rapp, 1827
- Geitodoris planata Alder & Hancock, 1846
- Jorunna tomentosa Cuvier, 1804
- Armina loveni Bergh, 1860
- Janolus cristatus delle Chiaje, 1841
- Janolus hyalinus Alder & Hancock, 1854
- Proctonotus mucroniferus Alder & Hancock, 1844
- Tritonia hombergii Cuvier, 1803
- Tritonia lineata Alder & Hancock, 1848
- Tritonia nilsodhneri Marcus, 1983
- Tritonia plebeia Johnston, 1828
- Lomanotus genei Verany, 1846
- Lomanotus marmoratus Alder & Hancock, 1845
- Scyllaea pelagica Linnaeus, 1758 Vagrant
- Hancockia uncinata Hesse, 1872
- Dendronotus frondosus Ascanius, 1774
- Doto coronata Gmelin, 1791
- Doto cuspidata Alder & Hancock, 1862
- Doto dunnei Lemche, 1976
- Doto eireana Lemche, 1976
- Doto fragilis Forbes, 1838
- Doto hystrix Picton & Brown, 1981
- Doto koenneckeri Lemche, 1976
- Doto lemchei Ortea & Urgorri, 1978
- Doto maculata Montagu, 1804
- Doto millbayana Lemche, 1976
- Doto pinnatifida Montagu, 1804
- Doto tuberculata Lemche, 1976
- Embletonia pulchra Alder & Hancock, 1844
- Coryphella browni Picton, 1980
- Coryphella gracilis Alder & Hancock, 1844
- Coryphella lineata Lovén, 1846
- Coryphella verrucosa M Sars, 1829
- Flabellina pedata Montagu, 1815
- Flabellina pellucida Alder & Hancock, 1843
- Tergipes tergipes Forsskål, 1775
- Catriona gymnota Couthouy, 1838
- Cuthona amoena Alder & Hancock, 1845
- Cuthona caerulea Montagu, 1804
- Cuthona concinna Alder & Hancock, 1843
- Cuthona foliata Forbes & Goodsir, 1839
- Cuthona genovae O'Donoghue, 1926
- Cuthona nana Alder & Hancock, 1842
- Cuthona pustulata Alder & Hancock, 1854
- Cuthona rubescens Picton & Brown, 1978
- Cuthona viridis Forbes, 1840
- Eubranchus doriae Trinchese, 1874
- Eubranchus exiguus Alder & Hancock, 1848
- Eubranchus farrani Alder & Hancock, 1844
- Eubranchus pallidus Alder & Hancock, 1842
- Eubranchus tricolor Forbes, 1838
- Eubranchus vittatus Alder & Hancock, 1842
- Cumanotus beaumonti Eliot, 1906
- Fiona pinnata Eschscholtz, 1831 Vagrant
- Calma glaucoides Alder & Hancock, 1854
- Facelina annulicornis Chamisso & Eysenhardt, 1821
- Facelina auriculata O F Müller, 1776
- Facelina bostoniensis Couthouy, 1838
- Facelina dubia Pruvot-Fol, 1949
- Caloria elegans Alder & Hancock, 1845
- Favorinus blianus Lemche & Thompson, 1974
- Favorinus branchialis Rathke, 1806
- Dicata odhneri Schmekel, 1967
- Aeolidia papillosa Linnaeus, 1761
- Aeolidiella alderi Cocks, 1852
- Aeolidiella glauca Alder & Hancock, 1845
- Aeolidiella sanguinea Norman, 1877