Red Ring may refer to: A ring with a red gemstone Biology Red ring disease, caused by the nematode Bursaphelenchus cocophilus Bicyclus anisops, red ring bush brown, a butterfly Hestina assimilis, red ring skirt, a butterfly Phellinus pini, red ring rot, a fungus Literature and comics Narya, the Red Ring, one of the Rings in J. R. R. Tolkien's Middle-earth universe Red power ring of the Red Lantern Corps in the DC universe Video games A special type of collectible ring in a number of Sonic the Hedgehog games A red ring that appears in some Mario games Red Ring of Death, a common Xbox 360 problem See also Ring of Red, 2000 video game Red Ring Rico, Phantasy Star Online character