Synasellus is a genus of isopod crustaceans in the family Asellidae. It contains the following species: \n* Synasellus albicastrensis Braga, 1960 \n* Synasellus barcelensis Noodt & Galhano, 1969 \n* Synasellus bragai Afonso, 1987 \n* Synasellus bragaianus Henry & Magniez, 1987 \n* Synasellus brigantinus Braga, 1959 \n* Synasellus capitatus (Braga, 1968) \n* Synasellus dissimilis Afonso, 1987 \n* Synasellus exiguus Braga, 1944 \n* Synasellus favaiensis Eiras, 1974 \n* Synasellus flaviensis Afonso, 1996 \n* Synasellus fragilis Braga, 1946 \n* Synasellus henrii Afonso, 1987 \n* Synasellus hurki Henry & Magniez, 1995 \n* Synasellus insignis Afonso, 1984 \n* Synasellus intermedius Afonso, 1985 \n* Synasellus lafonensis Braga, 1959 \n* Synasellus leysi Henry & Magniez, 1995 \n* Synasellus longic