diff --git a/SabreTools.Serialization/Deserializers/CHD.cs b/SabreTools.Serialization/Deserializers/CHD.cs
new file mode 100644
index 00000000..df7afb1e
--- /dev/null
+++ b/SabreTools.Serialization/Deserializers/CHD.cs
@@ -0,0 +1,241 @@
+using System;
+using System.IO;
+using System.Text;
+using SabreTools.IO.Extensions;
+using SabreTools.Models.CHD;
+
+namespace SabreTools.Serialization.Deserializers
+{
+    // TODO: Expand this to full CHD files eventually
+    public class CHD : BaseBinaryDeserializer<Header>
+    {
+        /// <inheritdoc/>
+        public override Header? Deserialize(Stream? data)
+        {
+            // If the data is invalid
+            if (data == null || data.Length == 0 || !data.CanSeek || !data.CanRead)
+                return null;
+
+            // If the offset is out of bounds
+            if (data.Position < 0 || data.Position >= data.Length)
+                return null;
+
+            // Cache the current offset
+            int initialOffset = (int)data.Position;
+
+            // Determine the header version
+            uint version = GetVersion(data);
+
+            // Read and return the current CHD
+            return version switch
+            {
+                1 => ParseHeaderV1(data),
+                2 => ParseHeaderV2(data),
+                3 => ParseHeaderV3(data),
+                4 => ParseHeaderV4(data),
+                5 => ParseHeaderV5(data),
+                _ => null,
+            };
+        }
+
+        /// <summary>
+        /// Get the matching CHD version, if possible
+        /// </summary>
+        /// <returns>Matching version, 0 if none</returns>
+        private static uint GetVersion(Stream data)
+        {
+            // Read the header values
+            byte[] tagBytes = data.ReadBytes(8);
+            string tag = Encoding.ASCII.GetString(tagBytes);
+            uint length = data.ReadUInt32BigEndian();
+            uint version = data.ReadUInt32BigEndian();
+
+            // Seek back to start
+            data.SeekIfPossible();
+
+            // Check the signature
+            if (!string.Equals(tag, Constants.SignatureString, StringComparison.Ordinal))
+                return 0;
+
+            // Match the version to header length
+            return (version, length) switch
+            {
+                (1, Constants.HeaderV1Size) => version,
+                (2, Constants.HeaderV2Size) => version,
+                (3, Constants.HeaderV3Size) => version,
+                (4, Constants.HeaderV4Size) => version,
+                (5, Constants.HeaderV5Size) => version,
+                _ => 0,
+            };
+        }
+
+        /// <summary>
+        /// Parse a Stream into a V1 header
+        /// </summary>
+        private static HeaderV1? ParseHeaderV1(Stream data)
+        {
+            var header = new HeaderV1();
+
+            byte[] tagBytes = data.ReadBytes(8);
+            header.Tag = Encoding.ASCII.GetString(tagBytes);
+            if (header.Tag != Constants.SignatureString)
+                return null;
+
+            header.Length = data.ReadUInt32BigEndian();
+            if (header.Length != Constants.HeaderV1Size)
+                return null;
+
+            header.Version = data.ReadUInt32BigEndian();
+            header.Flags = (Flags)data.ReadUInt32BigEndian();
+            header.Compression = (CompressionType)data.ReadUInt32BigEndian();
+            if (header.Compression > CompressionType.CHDCOMPRESSION_ZLIB)
+                return null;
+
+            header.HunkSize = data.ReadUInt32BigEndian();
+            header.TotalHunks = data.ReadUInt32BigEndian();
+            header.Cylinders = data.ReadUInt32BigEndian();
+            header.Heads = data.ReadUInt32BigEndian();
+            header.Sectors = data.ReadUInt32BigEndian();
+            header.MD5 = data.ReadBytes(16);
+            header.ParentMD5 = data.ReadBytes(16);
+
+            return header;
+        }
+
+        /// <summary>
+        /// Parse a Stream into a V2 header
+        /// </summary>
+        private static HeaderV2? ParseHeaderV2(Stream data)
+        {
+            var header = new HeaderV2();
+
+            byte[] tagBytes = data.ReadBytes(8);
+            header.Tag = Encoding.ASCII.GetString(tagBytes);
+            if (header.Tag != Constants.SignatureString)
+                return null;
+
+            header.Length = data.ReadUInt32BigEndian();
+            if (header.Length != Constants.HeaderV2Size)
+                return null;
+
+            header.Version = data.ReadUInt32BigEndian();
+            header.Flags = (Flags)data.ReadUInt32BigEndian();
+            header.Compression = (CompressionType)data.ReadUInt32BigEndian();
+            if (header.Compression > CompressionType.CHDCOMPRESSION_ZLIB)
+                return null;
+
+            header.HunkSize = data.ReadUInt32BigEndian();
+            header.TotalHunks = data.ReadUInt32BigEndian();
+            header.Cylinders = data.ReadUInt32BigEndian();
+            header.Heads = data.ReadUInt32BigEndian();
+            header.Sectors = data.ReadUInt32BigEndian();
+            header.MD5 = data.ReadBytes(16);
+            header.ParentMD5 = data.ReadBytes(16);
+            header.BytesPerSector = data.ReadUInt32BigEndian();
+
+            return header;
+        }
+
+        /// <summary>
+        /// Parse a Stream into a V3 header
+        /// </summary>
+        private static HeaderV3? ParseHeaderV3(Stream data)
+        {
+            var header = new HeaderV3();
+
+            byte[] tagBytes = data.ReadBytes(8);
+            header.Tag = Encoding.ASCII.GetString(tagBytes);
+            if (header.Tag != Constants.SignatureString)
+                return null;
+
+            header.Length = data.ReadUInt32BigEndian();
+            if (header.Length != Constants.HeaderV3Size)
+                return null;
+
+            header.Version = data.ReadUInt32BigEndian();
+            header.Flags = (Flags)data.ReadUInt32BigEndian();
+            header.Compression = (CompressionType)data.ReadUInt32BigEndian();
+            if (header.Compression > CompressionType.CHDCOMPRESSION_ZLIB_PLUS)
+                return null;
+
+            header.TotalHunks = data.ReadUInt32BigEndian();
+            header.LogicalBytes = data.ReadUInt64BigEndian();
+            header.MetaOffset = data.ReadUInt64BigEndian();
+            header.MD5 = data.ReadBytes(16);
+            header.ParentMD5 = data.ReadBytes(16);
+            header.HunkBytes = data.ReadUInt32BigEndian();
+            header.SHA1 = data.ReadBytes(20);
+            header.ParentSHA1 = data.ReadBytes(20);
+
+            return header;
+        }
+
+        /// <summary>
+        /// Parse a Stream into a V4 header
+        /// </summary>
+        private static HeaderV4? ParseHeaderV4(Stream data)
+        {
+            var header = new HeaderV4();
+
+            byte[] tagBytes = data.ReadBytes(8);
+            header.Tag = Encoding.ASCII.GetString(tagBytes);
+            if (header.Tag != Constants.SignatureString)
+                return null;
+
+            header.Length = data.ReadUInt32BigEndian();
+            if (header.Length != Constants.HeaderV4Size)
+                return null;
+
+            header.Version = data.ReadUInt32BigEndian();
+            header.Flags = (Flags)data.ReadUInt32BigEndian();
+            header.Compression = (CompressionType)data.ReadUInt32BigEndian();
+            if (header.Compression > CompressionType.CHDCOMPRESSION_AV)
+                return null;
+
+            header.TotalHunks = data.ReadUInt32BigEndian();
+            header.LogicalBytes = data.ReadUInt64BigEndian();
+            header.MetaOffset = data.ReadUInt64BigEndian();
+            header.HunkBytes = data.ReadUInt32BigEndian();
+            header.SHA1 = data.ReadBytes(20);
+            header.ParentSHA1 = data.ReadBytes(20);
+            header.RawSHA1 = data.ReadBytes(20);
+
+            return header;
+        }
+
+        /// <summary>
+        /// Parse a Stream into a V5 header
+        /// </summary>
+        private static HeaderV5? ParseHeaderV5(Stream data)
+        {
+            var header = new HeaderV5();
+
+            byte[] tagBytes = data.ReadBytes(8);
+            header.Tag = Encoding.ASCII.GetString(tagBytes);
+            if (header.Tag != Constants.SignatureString)
+                return null;
+
+            header.Length = data.ReadUInt32BigEndian();
+            if (header.Length != Constants.HeaderV5Size)
+                return null;
+
+            header.Version = data.ReadUInt32BigEndian();
+            header.Compressors = new uint[4];
+            for (int i = 0; i < header.Compressors.Length; i++)
+            {
+                header.Compressors[i] = data.ReadUInt32BigEndian();
+            }
+
+            header.LogicalBytes = data.ReadUInt64BigEndian();
+            header.MapOffset = data.ReadUInt64BigEndian();
+            header.MetaOffset = data.ReadUInt64BigEndian();
+            header.HunkBytes = data.ReadUInt32BigEndian();
+            header.UnitBytes = data.ReadUInt32BigEndian();
+            header.RawSHA1 = data.ReadBytes(20);
+            header.SHA1 = data.ReadBytes(20);
+            header.ParentSHA1 = data.ReadBytes(20);
+
+            return header;
+        }
+    }
+}
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