Yes; PyGTK supports svg icons very well via GdkPixbuf. The following example will open a simple widgetless window and render an SVG image (from the file 'my_imagefile.svg') as its icon the top left corner:

  w = gtk.Window()
  pixbuf = gtk.gdk.pixbuf_new_from_file('my_imagefile.svg')
  w.set_icon(pixbuf)

Apart from setting icons, you can use all functionality available to GdkPixbufs.

(Dennis Craven)

You can also do:

  img = gtk.Image()
  img.set_from_file('my_imagefile.svg')