The Red Republic is one of the nations of the plastic world. They appear as a playable faction in the multiplayer of Army Men: Sarge's War, and one is rescued in Dr. Madd's castle, and in Army Men: Sarge's Heroes in the cut-scene where Shrap is rescued from the spider machine. Originally they would probably represent a communist style army. It is also unknown where this Nation reside, though if it is anything like our world, they are probably east of the Blue Nation.
- They one of the nations that are only mentioned to exist but never formally appear or have a role on the games.
- In Army Men: Sarge's Heroes, A Red soldier can be seen who is being kicked by a Tan soldier into a machine which later transformed him into a spider.