In all my explorations of the Internet, I've never seen a collection of modern depictions of Norse myths.  I figured there should be one, so here it is:

TUDOR HUMPHRIES
From Michael Harrison's The Doom of the Gods:
Odin with his ravens
Loki
Loki at the foot of Bifrost
Loki transforming into a falcon
A gathering of Gods (Heimdall, Balder, Tyr, Skadhi, and Njord standing in back.)
Brokk, the Dwarf
Loki and Hod
Loki's Punishment
The Final Battle, Part 1:
Surt vs. Freyr, Vidar vs. Fenrir
The Final Battle, Part 2:
Loki vs. Heimdall, Tyr vs. Garm
ARTHUR RACKHAM
From his edition of Wagner's Ring:
Thor
Loki and the Rhinemaidens
Odin riding Sleipnir
Odin conversing with a dwarf
Brunnhilde
Odin summoning Loki
ROBIN WOOD
From Ed Fitch's dreadful book Rites of Odin:
Thor
Loki
Freya
Sif
CLIVE BARRETT
From his Norse Tarot
Hel (with Hermod in the foreground)
Balder
Odin
Thor
Tyr binding Fenrir
TROY HOWELL
From Mary Pope Osborne's Favorite Norse Myths
Odin, with the skull of Ymir behind him
Idhunn
Thor in his bridal disguise, with Thrym
Skadhi meets Njord, after choosing his feet
J. C. DOLLMAN
From H.A. Guerber's Myths of the Norsemen
The wolves pursuing Sol and Mani
Sif, with Thor in the background
Thor from behind
Hermod before Hel
DOROTHY HARDY
From Myths of the Norsemen
The Binding of Fenrir
Balder's Funeral Pyre
KELLEY JONES
From Neil Gaiman's Sandman
Odin without a beard
Loki's punishment (extreme close-up)
MARK HEMPEL
From Neil Gaiman's Sandman
Odin showing his age
Odin and his ghostly ravens
Lokiintroduces himself
Loki in silhouette
OTHER ARTISTS
Ran by M. E. Winge
Eastre by Jacques Reich
Odin by Sir E. Burne-Jones
Odin by Micheal Zulli
Hel by Joe Mandato
Odin and Thor go commercial  :)

If you can think of any pictures I should add, let me know.  If you think I need to take any of these pictures down, and you own the copyright, let me know that too, and I will.  I have the utmost respect for the artists represented, and this gallery honors them, as well as the gods.