Apollo was the God of the Sun, poetry, music and oracles
Bacchus was the God of Wine
Ceres was the Goddess of Agriculture
Cupid was the God of Love
Diana was the Goddess of Hunting
Goddess of Animals
Flora was the Goddess of Flowers and Spring
Fortuna was the Goddess of Fortune
Janus was the God of Doors and beginnings and endings
Juno was the Goddess of Marriage
Jupiter was the King of the Gods and the God of the sky and rain (aka Jove)
Mars was the God of War
Mercury was the Messenger of the Gods and of Commerce and Finance
Minerva was the Goddess of Wisdom, the City, Education, Science and War
Neptune was the God of the Sea
Pluto was the God of the Underworld
Saturn was the God of Harvest and Agriculture
Venus was the Goddess of Love and Beauty
Vesta was the Goddess of the Hearth and the Roman state
Vulcan was the God of Fire, the Forge and Blacksmiths

List of Names Roman Gods (Minor)
The following table contains a list of Roman Gods and Goddesses (minor):

Abundantia was the Goddess of Abundance and Prosperity
aesculapius was the God of Health and Medicine
Aurora was the Goddess of the dawn
Bubona was the Goddess of cattle
Candelifera was the Goddess of childbirth
Carmenta was the Goddess of Childbirth and Prophecy
Clementia was the Goddess of forgiveness and mercy
Cloacina was the Goddess who presided over the sewers in Rome
Concordia: Goddess of agreement
Cybele was the Earth Mother
Deverra was the Goddess of midwives and women in labor
Discordia was the Goddess of Discord
Edesia was the Goddess of food who presided over banquets
Epona was the God of horses
Fabulinus was the God of children
Fama was the Goddess of fame and rumor
Felicitas was the Goddess of good luck and success
Fides was the Goddess of loyalty
Hercules was the God of strength
Hespera was the Goddess of dusk
Hippona was the Goddess of horses
Honos was the God of military honours and chivalry
Invidia was the Goddess of envy or jealousy
Iris was the Goddess of the rainbow
Justitia was the Goddess of justice
Juventas was the Goddess of youth
Libertas was the Goddess of freedom
Libitina was the Goddess of death, corpses and funerals
Luna was the Goddess of the moon
Mithras was the God worshipped by Roman soldiers
Muta was the Goddess of silence
Necessitas was the Goddess of destiny
Nemesis was the Goddess of revenge
Opis was the Goddess of Fertility
Pax was the Goddess of peace
Pietas was the Goddess of duty
Pomona was the Goddess of fruit trees
Portunes was the God of Keys
Proserpina was the Goddess of Grain and Queen of the Dead
Sancus was the God of loyalty, honesty, and oaths
Sol Invictus was the sun God
Somnus was the God of sleep
Sors was the God of luck
Spes was the Goddess of hope
Tempestes was the Goddess of storms
Tranquillitas was the Goddess of peace and tranquillity
Trivia was the Goddess of magic
Veritas was the Goddess of virtue and truth
Victoria was the Goddess of victory
Voluptas was the Goddess of pleasure
Volturnus was the God of Water