Unio orientalis Bourguignat, 1852
Bourguignat, 1852. Test. Nov. Saulcy: 29.
(homonym of Unio orientalis Lea, 1840; renamed Unio bruguierianus Bourguignat, 1853)

Unio (sec. Lymnium) durieui — Simpson (1900), Simpson (1914)
Unio crassus bruguierianus — Haas (1940), Haas (1969), Schütt (1983)
Unio (Crassunio) crassus bruguierianus — Bank (2006)
Unio bruguierianus — Lopes-Lima et al. (2021), Bogan et al. (2021), Lopes-Lima et al. (2024)

Unio bruguierianus Bourguignat, 1853
Bourguignat, 1852. Test. Nov. Saulcy: 29 [as ‘Unio orientalis’].
Bourguignat, 1853. Catalogue Raissoné des Mollusques Terrestres et Fluviatiles Recueillis par M.F. Saulcy 1853: 78, pl. 2, figs. 54-56.
(new name for Unio orientalis Bourguignat, 1852)

Unio (sec. Lymnium) durieui — Simpson (1900), Simpson (1914)
Unio crassus bruguierianus — Haas (1940), Haas (1952), Haas (1969), Schütt (1983), Fauna Europaea (2012), Lopes-Lima et al. (2017)
Unio (Crassunio) crassus bruguierianus — Falkner (1994), Bank (2006)
Unio crassus — IUCN (2014)
Unio bruguierianus — Araujo et al. (2018), Graf & Cummings (2021), Príe et al. (2021), Lopes-Lima et al. (2021), Bogan et al. (2021), Lyubas et al. (2022), Lopes-Lima et al. (2024), Hou et al. (2024)

Unio prusii Bourguignat, 1856
Bourguignat, 1856. Aménités Malacol. 1: 160, pl. 12, figs. 1-4.

Unio (sec. Lymnium) durieui — Simpson (1900), Simpson (1914)
Unio crassus bruguierianus — Haas (1940), Haas (1969)
Unio bruguierianus — Lopes-Lima et al. (2021), Lopes-Lima et al. (2024)

Unio schwerzenbachi Bourguignat, 1856
Bourguignat, 1856. Aménités Malacol. 1: 159, pl. 14, figs. 1-5.

Unio (sec. Lymnium) durieui — Simpson (1900), Simpson (1914)
Unio crassus bruguierianus — Haas (1940), Haas (1969)
Unio bruguierianus — Lopes-Lima et al. (2021), Lopes-Lima et al. (2024)

Unio vescoi Bourguignat, 1856
Bourguignat, 1856. Aménités Malacol. 1: 157, pl. 11, figs. 4-8.

Unio (sec. Lymnium) durieui — Simpson (1900), Simpson (1914)
Unio crassus bruguierianus — Haas (1940), Haas (1969), Fauna Europaea (2012)
Unio bruguierianus — Lopes-Lima et al. (2021), Lopes-Lima et al. (2024)

Unio kotschyi Küster, 1862
Küster, 1862. Conchyl. Cab. 9(2): 267, pl. 90, fig. 5.

Unio crassus bruguierianus — Haas (1940), Haas (1969)
Unio bruguierianus — Lopes-Lima et al. (2021), Lopes-Lima et al. (2024)

Unio turcicus Küster, 1862
‘Parreiss in sched.’ Küster, 1862. Conchyl. Cab. 9(2): 267, pl. 90, figs. 3-4.
Type(s): SYNTYPES BMNH_47-5-28-1-2, Brussna.

Unio (sec. Lymnium) batavus — Simpson (1900), Simpson (1914)
Unio crassus bruguierianus — Haas (1940), Haas (1969)
Unio bruguierianus — Lopes-Lima et al. (2021), Lopes-Lima et al. (2024)

Unio desectus f. pursacensis Sturany, 1902
Sturany, 1902. S. Ber. K. Akad. Wiss. Wien 111: 138, pl. 2, figs. 10-11.
(intro'd as intra-sp. of Unio desectus Westerlund & Blanc, 1879)

Unio crassus bruguierianus — Haas (1969), Schütt (1983)
Unio bruguierianus — Lopes-Lima et al. (2021), Lopes-Lima et al. (2024)

Unio ancyrensis Kobelt, 1913
Kobelt, 1913. Icon. Land- und Süssw.-Moll. 19: 32, pl. 526, fig. 2727.

— Simpson (1914)
Unio crassus bruguierianus — Haas (1940), Haas (1969), Schütt (1983)
Unio bruguierianus — Lopes-Lima et al. (2021), Lopes-Lima et al. (2024)

Unio ancyrensis var. louisei Kobelt, 1913
Kobelt, 1913. Icon. Land- und Süssw.-Moll. 19: 32, pl. 526, fig. 2726.
(intro'd as intra-sp. of Unio ancyrensis Kobelt, 1913)

— Simpson (1914)
Unio crassus bruguierianus — Haas (1940), Haas (1969), Schütt (1983)
Unio bruguierianus — Lopes-Lima et al. (2021), Lopes-Lima et al. (2024)

Unio crassus Araujo et al., 2018
‘Philipsson’ of Authors.
Araujo et al., 2018. J. Linn. Soc., Zool. 182(2): supplementary table. [in part]
(misidentified reference to Unio crassus Retzius, 1788)

Unio bruguierianus — Lopes-Lima et al. (2021), Lopes-Lima et al. (2024)

Unio swerzenbackii Lea, 1870
‘Bourg.’ Lea, 1870. Synopsis Fam. Naiades: 46.
(error for Unio schwerzenbachi Bourguignat, 1856)