Mud Brick Wall is a decorative wall block introduced in Java Edition 1.19 (The Wild Update), crafted from mud bricks native to the mangrove swamp biome. To craft Mud Brick Wall, arrange 6 mud bricks in two horizontal rows of 3 on a crafting table to receive 6 Mud Brick Wall pieces. Alternatively, a stonecutter converts 1 mud brick directly into 1 Mud Brick Wall at a 1:1 ratio. Mud bricks themselves require 4 packed mud per block; packed mud is produced by placing any dripstone block directly beneath a mud block, which dries it naturally. Mud blocks generate in mangrove swamp biomes or can be created by using a water bottle on a dirt or mycelium block.

Mud Brick Wall functions like other wall types — Mud Brick Wall auto-connects to adjacent walls, fences, and solid blocks on all four cardinal sides. When Mud Brick Wall stands alone or connects only horizontally, a center post rises to roughly 1.5 blocks tall, preventing players from jumping over without a running jump; when a solid block is placed directly on top, the center post lowers to 1 block. Mobs pathfind around Mud Brick Wall as a full 1-block obstacle and cannot jump over it under normal conditions, making Mud Brick Wall an excellent animal pen or garden border. Mud Brick Wall shares the blast resistance of 6.0 with mud bricks and is mined fastest with any pickaxe tier — silk touch is not required, as any pickaxe drops Mud Brick Wall itself. The warm, earthy texture of Mud Brick Wall pairs naturally with mangrove wood, bamboo planks, and terracotta, offering a distinct alternative to stone or nether brick walls in rustic and tropical builds.