Eligius may refer to:

• Saint Eligius (c. 588–659), Catholic patron saint of goldsmiths and other metalworkers

• Eligius Pruystinck (died 1544)

• Eligius Fromentin (c. 1767–1822), American politician

• Eligius Franz Joseph von Münch-Bellinghausen (1806–1871), also known as Friedrich Halm, Austrian dramatist, poet and short-story writer

• Eligius Tambornino (born 1986)