The company will be able to stream A+E content (A&E, History, Lifetime, H2) under the terms of the arrangment.
Dish already signed a deal with Disney for the rights to stream its shows on five different networks.
A+E Networks is a joint venture between Disney (DIS -0.7%) and Hearst Corporation.
The launch of Dish's online service is expected before the end of the year. The company hopes to reach a "critical mass" of content which will lure in cord-cutters and cord-nevers.