Kamateroi Greek: Καματηροί; Latinized respectively Camaterus, Camateri), was a Byzantine family of functionaries from Constantinople that became prominent in the 10th–12th centuries.
The first attested member of the family is the spatharokandidatos Petronas Kamateros, who in c. 839 supervised the construction of the Sarkel fortress for the Khazars and later became governor of Cherson.
Several members of the family are attested in the 10th and 11th centuries as fiscal or judicial officials, and Gregory Kamateros became protasekretis and later logothetes ton sekreton to Emperor Alexios I Komnenos (r. 1081–1118).
John Kamateros enjoyed the favour of Manuel I and was logothetes tou dromou in the late 1150s.
The sebastos Andronikos Kamateros became eparch of Constantinople and droungarios of the Vigla, and was also a theologian of note.