Where is the default text object font (Bfont)? I've found bmonofont-i18n.ttf.gz and droidsans.ttf.gz in the datafiles/fonts directory, but neither seems to be the default font that's actually used for Text objects.

Here's how the default font looks:


Here's bmonofont-i18n.ttf:


droidsans.ttf:


Clearly, the fonts I've found are not the same as the actual default.

I want to find the actual default.
The font is bfont.pfb

This is a built-in font which means it  is compiled into blender. The font file is available from the blender source tree in release/datafiles

You can access and download the file, e.g., from the GIT repository at blender.org:

http://git.blender.org/gitweb/gitweb.cgi/blender.git/tree/HEAD:/release/datafiles

In the directory listing, search for the file bfont.pfb and click in the rightmost column on "raw" to download and save the file. 

Or try this direct link:

http://git.blender.org/gitweb/gitweb.cgi/blender.git/blob_plain/HEAD:/release/datafiles/bfont.pfb