无线随意网络（英语：Wireless ad hoc network，缩写为WANET），又称无线临时网络，是一种分布式的无线网络系统。ad hoc源自拉丁文，原意是临时、专用、特设的。它被称为ad hoc，是因为这种网络系统是临时形成，由节点与节点间的动态链接所形成。它不需要依赖一个既存的网络架构，像是有线系统的路由器，或是无线系统的无线网络基地台。相反的，它每一个节点，都有能力转送网络封包给其他节点（这称为路由）。由DARPA资助，在1970年代开始的封包无线电技术研究，是无线随意网络的最早应用。无线随意网络被包涵在IEEE 802.11标准中。

A wireless ad hoc network (WANET) is a decentralized type of wireless network. The network is ad hoc because it does not rely on a pre existing infrastructure, such as routers in wired networks or access points in managed (infrastructure) wireless networks. Instead, each node participates in routing by forwarding data for other nodes, so the determination of which nodes forward data is made dynamically on the basis of network connectivity . In addition to the classic routing, ad hoc networks can use flooding for forwarding data.