Earlier this week we heard that TIGER WOODS was desperate to get his ex-wife ELIN NORDEGREN back.  But maybe he's actually moved on.

The "Star" tabloid claims that he's been nailing Olympic skier LINDSEY VONN since November.  A source says, quote, "He wants to marry again, and thinks Lindsey could be the woman."  Lindsey is 28 . . . Tiger is 37.

Lindsey just got divorced last month, but she split from her husband, fellow skier THOMAS VONN, over a year ago. She's quite lovely!