Inquisitor is een geslacht van weekdieren uit de klasse van de Gastropoda (slakken).

Soorten 
 Inquisitor acervatus Cotton, 1947
 Inquisitor adenicus Sysoev, 1996
 Inquisitor aemula (Angas, 1877)
 Inquisitor aesopus (Schepman, 1913)
 Inquisitor alabaster (Reeve, 1843)
 Inquisitor angustiliratus Sysoev, 1996
 Inquisitor angustus Kuroda & Oyama, 1971
 Inquisitor arctatus Kilburn, 1988
 Inquisitor armillatus Stahlschmidt & Fraussen, 2014
 Inquisitor awamoaensis (Hutton, 1873) †
 Inquisitor carmen (G. B. Sowerby III, 1916)
 Inquisitor chocolata (E. A. Smith, 1875)
 Inquisitor dampieria (Hedley, 1922)
 Inquisitor eburatus Bozzetti, 2011
 Inquisitor elachystoma (Martens, 1901)
 Inquisitor elegans Bozzetti, 1993
 Inquisitor elkeae Stahlschmidt, 2013
 Inquisitor exiguus (Kuroda & Oyama, 1971)
 Inquisitor flemingi (Vella, 1954) †
 Inquisitor flindersianus Hedley, 1922
 Inquisitor formidabilis Hedley, 1922
 Inquisitor fraudator (Finlay & Marwick, 1937) †
 Inquisitor fusiformis Stahlschmidt, 2013
 Inquisitor glauce (Dall, 1918)
 Inquisitor hebes Marwick, 1931 †
 Inquisitor hedleyi (Verco, 1909)
 Inquisitor hormophorus Sysoev & Bouchet, 2001
 Inquisitor indistinctus Sysoev, 1996
 Inquisitor insignita (Melvill, 1923)
 Inquisitor interrupta (Lamarck, 1816)
 Inquisitor intertinctus (E. A. Smith, 1877)
 Inquisitor isabella Kilburn, 1988
 Inquisitor jeffreysii (E. A. Smith, 1875)
 Inquisitor kawamurai (Habe & Kosuge, 1966)
 Inquisitor kilburni Wells, 1994
 Inquisitor komiticus Laws, 1939 †
 Inquisitor kurodai (Habe & Kosuge, 1966)
 Inquisitor lassulus Hedley, 1922
 Inquisitor laterculata (Sowerby II, 1870)
 Inquisitor latifasciata (Sowerby II, 1870)
 Inquisitor latiriformis Kilburn, 1988
 Inquisitor minimarus Kosuge, 1993
 Inquisitor minutosternalis Kosuge, 1993
 Inquisitor mirabelflorenti Cossignani, 2016
 Inquisitor multilirata (E. A. Smith, 1877)
 Inquisitor nodicostatus Kilburn, 1988
 Inquisitor nudivaricosus Kuroda & Oyama, 1971
 Inquisitor odhneri Wells, 1994
 Inquisitor plurinodulatus Cotton, 1947
 Inquisitor plurivaricis Li B. Q., Kilburn & Li X. Z., 2010
 Inquisitor powelli (Dell, 1950) †
 Inquisitor pseudoprincipalis (Yokoyama, 1920)
 Inquisitor radula (Hinds, 1843)
 Inquisitor rubens Morassi, 1998
 Inquisitor rufovaricosus (Kuroda & Oyama, 1971)
 Inquisitor sexradiata (Odhner, 1917)
 Inquisitor spicata (Hinds, 1843)
 Inquisitor stenos Sysoev, 1996
 Inquisitor sterrha (Watson, 1881)
 Inquisitor subangusta (Schepman, 1913)
 Inquisitor taivaricosa Chang & Wu, 2000
 Inquisitor variabilis (E. A. Smith, 1877)
 Inquisitor varicosus (Reeve, 1843)
 Inquisitor vexillum (Habe & Kosuge, 1966)
 Inquisitor vividus Li B. Q., Kilburn & Li X. Z., 2010
 Inquisitor vulpionis Kuroda & Oyama, 1971
 Inquisitor waihoraensis Marwick, 1931 †
 Inquisitor zebra (Lamarck, 1822)
 Inquisitor zonata (Reeve, 1843)

Pseudomelatomidae