The disclosed computer-implemented method for connecting purpose-built appliances to secure wireless networks may include (1) receiving, via an unsecured wireless network, an identifier from a network device that is not connected to a secure wireless network associated with the computing device, (2) sending, via the unsecured wireless network, a token to the network device, (3) receiving confirmation from a user of the network device that the network device correctly displayed the token and that the user would like to connect the network device to the secure wireless network, and (4) in response to the confirming that the user would like to connect the network device to the secure wireless network, sending, via the unsecured wireless network, network credentials for the secure wireless network to the network device to enable the network device to connect to the secure wireless network. Various other methods, systems, and computer-readable media are also disclosed.