Aristoteles - 87 km wide
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In his book On The Moon, Sir Patrick Moore says "... a large crater intruding into a smaller peaked crater...is unknown on the moon." But big Aristoteles intrudes into the small crater on its right side. Sorry, Pat.
To the south, a barely visible crater named Linne caused quite a stir long ago. In 1886 a famous astronomer announced that the crater at Linne had vanished and all that was left was a white patch. It turned out that the problem arose from viewing a crater at the limits of visibility through the telescopes of the day. The little crater (2.5 km) is still there.
Image: November 04, 2006