Marcus Arrecinus Clemens (prefect 70)

Marcus Arrecinus Clemens (fl 1st century), was a prefect of the Roman imperial bodyguard, known as the Praetorian Guard.

Clemens came from obscure origins and according to the historian Suetonius, his family were of Equestrian rank. He was the namesake of his father. Clemens' mother could have been named Julia and his sister was Arrecina Tertulla, who became the first wife of the future Emperor Titus. There is a possibility that Clemens was related to the paternal side of Vespasian. Vespasian's paternal grandmother bore the cognomen Tertulla and this cognomen was also borne by his sister and paternal grandmother. Clemens served as prefect in the early reign of Emperor Vespasian, from 70 until 71. Clemens acceded to this position by appointment of Vespasian's political ally, Gaius Licinius Mucianus, amidst concerns that his predecessor Arrius Varus was growing too influential. According to Tacitus, Clemens was chosen because his father, also named Marcus Arrecinus Clemens, had honourably commanded the Guard during the reign of Emperor Caligula in 38.

In June 71, he was replaced by Vespasian's eldest son Titus. He held two suffect consulships, in 73 and 85, respectively, governed the province of Hispania Tarraconensis in between this period, and was finally made city prefect of Rome in 86. It is believed he died during the reign of Titus' brother Domitian.