Abstract-Mobile Ad hoc networks (MANET) are communication networks that consist of wireless nodes, which placed together in an ad hoc manner. Nodes can enter or leave the network at any time, so that the network topology changes frequently. In this paper we are going to propose an algorithm for routing in mobile ad hoc networks. Routing task has some challenging problem in MANETs, based on having dynamic and unplanned nature. For facing with these challenges we propose an Adaptive Multipath Ant Routing algorithm (AMAR) by combining ideas from artificial intelligence (AI) and multipath routing in this algorithm for improving the network performance. In an extensive set of simulation experiments, we compare this algorithm with AntHocNet and AODV and OLSR which are three reference algorithms in this research area.