diff --git a/api/api.yml b/api/api.yml
index 5853902..08389d1 100644
--- a/api/api.yml
+++ b/api/api.yml
@@ -95,8 +95,14 @@ components:
       properties:
         username:
           type: string
+        id:
+          type: integer
+          format: int64
+        banned:
+          type: boolean
       required:
         - username
+        - banned
     #############################################
     #  PlayerFilter                             #
     #############################################
@@ -259,6 +265,40 @@ paths:
                 type: array
                 items:
                   $ref: "#/components/schemas/AdministratablePlayer"
+  /admin/player/{id}/ban:
+    parameters:
+      - in: path
+        name: id
+        schema:
+          type: integer
+          format: int64
+        required: true
+    post:
+      operationId: "BanPlayer"
+      tags:
+        - admin
+      summary: "Ban player by id"
+      description: "Bans a player by id, making them unable to play the game."
+      responses:
+        200:
+          description: "Successfully banned player!"
+  /admin/player/{id}/unban:
+    parameters:
+      - in: path
+        name: id
+        schema:
+          type: integer
+          format: int64
+        required: true
+    post:
+      operationId: "UnbanPlayer"
+      tags:
+        - admin
+      summary: "Unban player by id"
+      description: "Unbans a player by id, allowing them to play the game."
+      responses:
+        200:
+          description: "Successfully unbanned player!"
         401:
           $ref: "#/components/responses/401Unauthorized"
         500:
diff --git a/src/main/java/de/towerdefence/server/admin/AdminApiController.java b/src/main/java/de/towerdefence/server/admin/AdminApiController.java
index 9356c2a..3191942 100644
--- a/src/main/java/de/towerdefence/server/admin/AdminApiController.java
+++ b/src/main/java/de/towerdefence/server/admin/AdminApiController.java
@@ -8,6 +8,7 @@ import de.towerdefence.server.oas.models.AdministratablePlayer;
 import de.towerdefence.server.oas.models.PlayerFilter;
 import de.towerdefence.server.player.Player;
 import de.towerdefence.server.player.PlayerRepository;
+import de.towerdefence.server.player.PlayerService;
 import de.towerdefence.server.utils.OrderToDirectionMapperService;
 import de.towerdefence.server.utils.PlayerMapperService;
 import jakarta.servlet.http.HttpServletRequest;
@@ -36,6 +37,9 @@ public class AdminApiController implements AdminApi {
     @Autowired
     PlayerMapperService playerMapperService;
 
+    @Autowired
+    PlayerService playerService;
+
     @Autowired
     OrderToDirectionMapperService orderToDirectionMapperService;
 
@@ -57,6 +61,12 @@ public class AdminApiController implements AdminApi {
         return ResponseEntity.ok(authInfo);
     }
 
+    @Override
+    public ResponseEntity<Void> banPlayer(Long id) {
+        this.playerService.banPlayer(id);
+        return null;
+    }
+
     @Override
     public ResponseEntity<List<AdministratablePlayer>> getAllPlayers(PlayerFilter body) {
 
@@ -83,4 +93,10 @@ public class AdminApiController implements AdminApi {
 
         return ResponseEntity.ok(playersMapped);
     }
+
+    @Override
+    public ResponseEntity<Void> unbanPlayer(Long id) {
+        this.playerService.unbanPlayer(id);
+        return null;
+    }
 }
diff --git a/src/main/java/de/towerdefence/server/player/Player.java b/src/main/java/de/towerdefence/server/player/Player.java
index 1d84ec9..058b8cf 100644
--- a/src/main/java/de/towerdefence/server/player/Player.java
+++ b/src/main/java/de/towerdefence/server/player/Player.java
@@ -2,11 +2,9 @@ package de.towerdefence.server.player;
 
 import jakarta.validation.constraints.NotNull;
 import jakarta.validation.constraints.Size;
-import lombok.Setter;
-import lombok.Getter;
-import lombok.NoArgsConstructor;
-import lombok.AllArgsConstructor;
+import lombok.*;
 import jakarta.persistence.*;
+import org.hibernate.annotations.ColumnDefault;
 
 @NoArgsConstructor
 @AllArgsConstructor
@@ -33,4 +31,8 @@ public class Player {
     @NotNull
     @Size(min = PASSWORD_SALT_BYTE_LENGTH, max = PASSWORD_SALT_BYTE_LENGTH)
     private byte[] passwordSalt;
+
+    @NotNull
+    @ColumnDefault("false")
+    private boolean banned;
 }
diff --git a/src/main/java/de/towerdefence/server/player/PlayerService.java b/src/main/java/de/towerdefence/server/player/PlayerService.java
index 0cfc6d1..fef4e99 100644
--- a/src/main/java/de/towerdefence/server/player/PlayerService.java
+++ b/src/main/java/de/towerdefence/server/player/PlayerService.java
@@ -1,5 +1,6 @@
 package de.towerdefence.server.player;
 
+import de.towerdefence.server.oas.models.AdministratablePlayer;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Component;
 
@@ -49,4 +50,18 @@ public class PlayerService {
         md.update(salt);
         return md.digest(password);
     }
+
+    public void banPlayer(Long id) {
+        this.playerRepository.findById(id).ifPresent(player -> {
+            player.setBanned(true);
+            this.playerRepository.saveAndFlush(player);
+        });
+    }
+
+    public void unbanPlayer(Long id) {
+        this.playerRepository.findById(id).ifPresent(player -> {
+            player.setBanned(false);
+            this.playerRepository.saveAndFlush(player);
+        });
+    }
 }
diff --git a/src/main/java/de/towerdefence/server/server/ServerApiController.java b/src/main/java/de/towerdefence/server/server/ServerApiController.java
index 2dda3e3..3975481 100644
--- a/src/main/java/de/towerdefence/server/server/ServerApiController.java
+++ b/src/main/java/de/towerdefence/server/server/ServerApiController.java
@@ -45,7 +45,7 @@ public class ServerApiController implements ServerApi {
     @Override
     public ResponseEntity<Void> playerRegister(PlayerRegistrationData body) {
         if(playerRepository.existsByUsername(body.getUsername())){
-            return new ResponseEntity<>(HttpStatus.CONFLICT);
+            return new ResponseEntity<>(HttpStatus.FORBIDDEN);
         }
         Player newPlayer = new Player();
         newPlayer.setUsername(body.getUsername());
@@ -61,6 +61,10 @@ public class ServerApiController implements ServerApi {
     @Override
     public ResponseEntity<PlayerLoginSession> playerLogin(PlayerLoginData body) {
         Player player = playerRepository.findByUsername(body.getUsername());
+        if(player.isBanned())
+        {
+            return new ResponseEntity<>(HttpStatus.CONFLICT);
+        }
         if(player == null){
             return new ResponseEntity<>(HttpStatus.UNAUTHORIZED);
         }
diff --git a/src/main/java/de/towerdefence/server/utils/PlayerMapperService.java b/src/main/java/de/towerdefence/server/utils/PlayerMapperService.java
index 0de83da..e6a3f79 100644
--- a/src/main/java/de/towerdefence/server/utils/PlayerMapperService.java
+++ b/src/main/java/de/towerdefence/server/utils/PlayerMapperService.java
@@ -15,6 +15,8 @@ public class PlayerMapperService {
         for (Player player : players) {
             AdministratablePlayer apiPlayer = new AdministratablePlayer();
             apiPlayer.setUsername(player.getUsername());
+            apiPlayer.setId(player.getId());
+            apiPlayer.setBanned(player.isBanned());
             administratablePlayers.add(apiPlayer);
         }
         return administratablePlayers;