According to the Apple website, yes. Mac does support it.
Here's directly from their site:
Microsoft Windows Font Formats
Mac OS X also works with font formats used by Microsoft Windows. These fonts have all their data in the data fork and do not have the additional resources found in Macintosh fonts. Mac OS X works with these font formats:
* TrueType fonts (with the extension .ttf)
* TrueType collections (with the extension .ttc)
* OpenType fonts (with the extension .otf)
Macs use the TrueType Font format. :D Apple was the original creator of this format in the late 80's.