The twelve major gods of Olympus are shown underlined. Bacchus in some accounts takes the place of Vesta . Pluto and Prospertine are gods of the Underworld.

Roman Gods Of Mythology

Apollo--God of the sun, music, Poetry, prophecy, and healing
Bacchus--God of wine
Bellona--Goddess of war
Ceres--Corn goddess
Cupid--God of love
Diana--Goddess of fertility, hunting, and the moon
Fannus--God of prophecy
Flora--Goddess of flowers
Janus--God of gates and doors
Juno--Goddess of marriage and women
Jupiter--Supreme god; lord of heaven
Lares--Gods of the household and state
Libitina--Goddess of funerals
Maia--Goddess of growth and increase
Mars--God of war
Mercury--Messenger god; also god of commerce
Minerva--Goddess of wisdom, the arts, and trades
Mithras--The sun god; god of light
Neptune--God of the sea
Ops--Goddess of fertility
Pales--Goddess of flocks and shepards
Pluto--God of the underworld
Pomona--Goddess of fruit treesand fruit
Proserpine--Goddess of the underworld
Saturn--God of seed time and harvest
Venus--Goddess of love and beauty
Vertumnus--God of the seasons
Vesta--Goddess of the hearth
Vulcan--God of fire