The disclosed computer-implemented method for tagging client devices may include (i) receiving from a router at least one network packet that indicates that a client device has attempted to connect to the router and that includes device information identifying the client device, (ii) prompting, automatically in response to receiving the network packet indicating that the client device has attempted to connect to the router, a user to tag the client device with a descriptive name to facilitate management of the client device, (iii) receiving, in response to prompting the user to tag the client device, a tag that indicates a specific descriptive name for the client device, and (iv) transmitting, automatically in response to receiving the tag, the specific descriptive name to at least one of the router and a cloud security server. Various other methods, systems, and computer-readable media are also disclosed.