Bidessus is a genus of beetles in the family Dytiscidae, containing the following species:
Bidessus alienus Zimmermann, 1919
Bidessus anatolicus Wewalka, 1971
Bidessus apicidens Biström & Sanfilippo, 1986
Bidessus bertrandi Biström, 1988
Bidessus cacozelus Omer-Cooper, 1931
Bidessus calabricus Guignot, 1957
Bidessus ceratus Guignot, 1941
Bidessus complicatus Sharp, 1904
Bidessus coxalis Sharp, 1882
Bidessus cretensis Fery, 1992
Bidessus decellei Biström, 1985
Bidessus delicatulus (Schaum, 1844) Bidessus excavatus Biström, 1984 Bidessus exornatus (Reiche & Saulcy, 1855) Bidessus fraudator Omer-Cooper, 1958 Bidessus fulgidus Omer-Cooper, 1974 Bidessus funebris Guignot, 1959 Bidessus glabrescens Biström, 1983 Bidessus goudotii (Laporte, 1835) Bidessus grossepunctatus Vorbringer, 1907 Bidessus imitator Omer-Cooper, 1953 Bidessus longistriga Régimbart, 1895 Bidessus minutissimus (Germar, 1824) Bidessus muelleri Zimmermann, 1927 Bidessus muluensis Omer-Cooper, 1931 Bidessus mundulus Omer-Cooper, 1965 Bidessus nasutus Sharp, 1887 Bidessus nero Gschwendtner, 1933 Bidessus nesioticus Guignot, 1956 Bidessus occultus Sharp, 1882 Bidessus omercooperae Biström, 1985 Bidessus ovoideus Régimbart, 1895 Bidessus perexiguus H.J.Kolbe, 1883 Bidessus pergranulum Biström, 1985 Bidessus perrinae Biström, 1985 Bidessus perssoni Biström & Nilsson, 1990 Bidessus pumilus (Aubé, 1838) Bidessus rossi Omer-Cooper, 1974 Bidessus rothschildi Régimbart, 1907 Bidessus ruandensis Omer-Cooper, 1974 Bidessus saucius (Desbrochers des Loges, 1871) Bidessus seydeli Biström, 1985 Bidessus sharpi Régimbart, 1895 Bidessus sodalis Guignot, 1939 Bidessus straeleni Omer-Cooper, 1974 Bidessus toumodiensis Guignot, 1939 Bidessus udus Biström, 1985 Bidessus unistriatus (Goeze, 1777) Bidessus wilmoti Biström, 1985