  $D$-loops are loops with the antiautomorphic inverse property. The class of
such loops is larger than the class of IP-loops. The smallest $D$-loops which
is not an IP-loop has six elements. We prove several basic properties of such
loops and present methods of constructions of $D$-loops from IP-loops.
Unfortunately, a loop isotopic to a $D$-loop may not be a $D$-loop.

Group Theory