Norse Deities
Aegir - God of the sea, strength of the ocean for good or bad
Aesir - Race of the gods founded by Odin (In a constant feud with the Vanir, another family of gods)
Alaisiagae - War goddesses (see Valkyries)
Alcis - Twin gods of the sky
Alfheim - The realm beyond Asgard (home of the gods) where the fair elves live
Andarvi - A dwarf
Angrboda - A giantess who mothered Loki's monstrous children including Hel, Fenrir and the Midgard Serpent
Baldur - 'The Beautiful' Heroic god son of Odin
Boe - Son of Odin and Rinda who avenged the death of Baldur
Bor - Son of Buri and father of Odin, Vili and Ve
Bragi - God of poetry
Donar - God of thunder
Elli - A woman who bested Thor is a wrestling competition. Her name meaning 'old age'
Fafnir - A dragon god son of Hreidmar
Fenrir (Fenris Wolf) - Child of Loki and Angrboda
Fjorgynn - Mother of Thor representing the earth
Forseti - Son of Baldur, divine giver of good laws
Freyja - Goddess of sex (daughter of Njord, twin sister of Freyr)
Freyr - God of fertility (son of Njord, twin brother of Freyja)
Frigg - Goddess of fertility (wife of Odin, mother of Baldur, queen of asgard)
Garm - Hound of the underworld. Possibly as aspect of Fenrir, he will break free at the Ragnarok and kill the god Tyr
Gefjun (Gefion) - The goddess who receives virgins after their death
Heimdall - 'The White God' Guardian of the bridge Bifrost
Hel - goddess of death, ruler of Niflheim (land of mists)
Hermod - Son of Odin
Hoder - Blind god who killed Baldur with a sprig of mistletoe
Hymir - A giant
Idunn - Goddess who guards the golden apples of youth (wife of Bragi)
Ing - Founder god of the Anglo-Saxons
Kvasir - Wisest of the gods created from the spittle of both the Aesir and the Vanir
Logi - Personification of fire
Loki - God of mischief
Mimir - God of wisdom
Nanna - Goddess-wife of Baldur
Nehallennia - Goddess of plenty
Nerthus - Goddess of earth
Njord - God of sea and ships
Odin (Othinn, Woden, Wotan) - God of battle, death and inspiration, hanged men. Chief god of the Aesir
Otr - 'Otter' son of Hreidmar, Killed by Loki
Ragnarok - 'Destruction of the powerful ones' apocalypse
Ran - Goddess of the sea (wife of Aegir)
Sif - goddess wife of Thor
sigyn - Goddess wife of Loki
Sleipnir - Eight legged horse of Odin
Thor (Donar, Thunor) - God of thunder, the sky, weather and weather dependant crops
Tiwaz - Germanic god of battle
Tyr - Battle god identified with Tiwaz
Ull - A minor god
Utgard-Loki - A supernatural giant
Valkyries (Alaisiagae) - 'Choosers of the Slain' nearest Norse equivalent to the Celtic Morrigan
Vanir - Family of norse fertility gods (always feuding with the Aesir)
Weland (Volundr, Wieland, Wayland) - God of smiths
Adapted from 'A guide to the Gods' by Richard Carlyon
I recommend this book for much much more information on these and othe deities