Camping Coihue Viejo is a free (libre) primitive campground situated along Lago Futalaufquen within Parque Nacional Los Alerces, in the Chubut province of Argentine Patagonia.

It is one of several no-fee, unorganized camping areas clustered in the central zone of the park along the lake's shoreline. As a free, agreste-style site, it offers a back-to-basics outdoor experience with no organized facilities or services.

It is listed alongside other free sites in the area such as Cascada Irigoyen, Quebrada del León, and Las Rocas. Visitors should note that fire regulations vary throughout the park, and it is advisable to confirm current rules before use.