Boethus, Boëthus or Boethos (Ancient Greek: Βόηθος) may also refer to:
- Hotepsekhemwy (29th century BCE), Egyptian king known in Greek sources as Boethos
- Boethus (Platonist) (4th century BCE), Platonist philosopher
- Boethoi (3rd–2nd century BCE), a family of metalworkers, including
- Boethus of Carthage (c. 2nd century BCE), Greek sculptor
- Boethus of Chalcedon (c. 2nd century BCE), Greek sculptor
- Boethos (gem cutter) (c. 2nd century BCE), Greek gem cutter
- Boethus of Marathon (died 120/119 BCE), Greek philosopher
- Boethus of Sidon (Stoic) (fl. 2nd century BCE), Stoic philosopher
- Boethus of Sidon (Peripatetic) (c. 75 BCE – c. 10 BCE), Peripatetic philosopher
- Boethus of Cilicia (1st century BCE), Roman governor and poet
- Herod II (died 33/34 CE), Judean prince, sometimes called Herod Boethus
- Boethus the Epicurean (fl. 1st century CE), Epicurean philosopher
- Titus Flavius Boethus (died 168 CE), Roman senator
- Boethus (family), family of Jewish high priests
- Boethus, namesake of the ancient Jewish sect of the Boethusians
- Simon son of Boethus, his son