diff --git a/gguf-py/gguf/gguf.py b/gguf-py/gguf/gguf.py
index 598cf8e59..58e4cd293 100644
--- a/gguf-py/gguf/gguf.py
+++ b/gguf-py/gguf/gguf.py
@@ -85,10 +85,12 @@ class MODEL_ARCH(IntEnum):
     GPTNEOX       : int = auto()
     MPT           : int = auto()
     STARCODER     : int = auto()
+    BERT          : int = auto()
 
 
 class MODEL_TENSOR(IntEnum):
     TOKEN_EMBD   : int = auto()
+    TOKEN_TYPES  : int = auto()
     POS_EMBD     : int = auto()
     OUTPUT       : int = auto()
     OUTPUT_NORM  : int = auto()
@@ -116,6 +118,7 @@ MODEL_ARCH_NAMES: dict[MODEL_ARCH, str] = {
     MODEL_ARCH.GPTNEOX:        "gptneox",
     MODEL_ARCH.MPT:            "mpt",
     MODEL_ARCH.STARCODER:      "starcoder",
+    MODEL_ARCH.BERT:           "bert",
 }
 
 MODEL_TENSOR_NAMES: dict[MODEL_ARCH, dict[MODEL_TENSOR, str]] = {
@@ -147,15 +150,15 @@ MODEL_TENSOR_NAMES: dict[MODEL_ARCH, dict[MODEL_TENSOR, str]] = {
         MODEL_TENSOR.FFN_UP:        "blk.{bid}.ffn_up",
     },
     MODEL_ARCH.FALCON: {
-        MODEL_TENSOR.TOKEN_EMBD:  "token_embd",
-        MODEL_TENSOR.OUTPUT_NORM: "output_norm",
-        MODEL_TENSOR.OUTPUT:      "output",
-        MODEL_TENSOR.ATTN_NORM:   "blk.{bid}.attn_norm",
-        MODEL_TENSOR.ATTN_NORM_2: "blk.{bid}.attn_norm_2",
-        MODEL_TENSOR.ATTN_QKV:    "blk.{bid}.attn_qkv",
-        MODEL_TENSOR.ATTN_OUT:    "blk.{bid}.attn_output",
-        MODEL_TENSOR.FFN_DOWN:    "blk.{bid}.ffn_down",
-        MODEL_TENSOR.FFN_UP:      "blk.{bid}.ffn_up",
+        MODEL_TENSOR.TOKEN_EMBD:    "token_embd",
+        MODEL_TENSOR.OUTPUT_NORM:   "output_norm",
+        MODEL_TENSOR.OUTPUT:        "output",
+        MODEL_TENSOR.ATTN_NORM:     "blk.{bid}.attn_norm",
+        MODEL_TENSOR.ATTN_NORM_2:   "blk.{bid}.attn_norm_2",
+        MODEL_TENSOR.ATTN_QKV:      "blk.{bid}.attn_qkv",
+        MODEL_TENSOR.ATTN_OUT:      "blk.{bid}.attn_output",
+        MODEL_TENSOR.FFN_DOWN:      "blk.{bid}.ffn_down",
+        MODEL_TENSOR.FFN_UP:        "blk.{bid}.ffn_up",
     },
     MODEL_ARCH.BAICHUAN: {
         MODEL_TENSOR.TOKEN_EMBD:    "token_embd",
@@ -185,6 +188,43 @@ MODEL_TENSOR_NAMES: dict[MODEL_ARCH, dict[MODEL_TENSOR, str]] = {
         MODEL_TENSOR.FFN_DOWN:      "blk.{bid}.ffn_down",
         MODEL_TENSOR.FFN_UP:        "blk.{bid}.ffn_up",
     },
+    MODEL_ARCH.BERT: {
+        MODEL_TENSOR.TOKEN_EMBD:    "token_embd",
+        MODEL_TENSOR.TOKEN_TYPES:   "token_types",
+        MODEL_TENSOR.POS_EMBD:      "position_embd",
+        MODEL_TENSOR.OUTPUT_NORM:   "output_norm",
+        MODEL_TENSOR.ATTN_NORM:     "blk.{bid}.attn_norm",
+        MODEL_TENSOR.ATTN_Q:        "blk.{bid}.attn_q",
+        MODEL_TENSOR.ATTN_K:        "blk.{bid}.attn_k",
+        MODEL_TENSOR.ATTN_V:        "blk.{bid}.attn_v",
+        MODEL_TENSOR.ATTN_OUT:      "blk.{bid}.attn_output",
+        MODEL_TENSOR.FFN_NORM:      "blk.{bid}.ffn_norm",
+        MODEL_TENSOR.FFN_DOWN:      "blk.{bid}.ffn_down",
+        MODEL_TENSOR.FFN_UP:        "blk.{bid}.ffn_up",
+    },
+    MODEL_ARCH.MPT: {
+        MODEL_TENSOR.TOKEN_EMBD:    "token_embd",
+        MODEL_TENSOR.OUTPUT_NORM:   "output_norm",
+        MODEL_TENSOR.OUTPUT:        "output",
+        MODEL_TENSOR.ATTN_NORM:     "blk.{bid}.attn_norm",
+        MODEL_TENSOR.ATTN_QKV:      "blk.{bid}.attn_qkv",
+        MODEL_TENSOR.ATTN_OUT:      "blk.{bid}.attn_output",
+        MODEL_TENSOR.FFN_NORM:      "blk.{bid}.ffn_norm",
+        MODEL_TENSOR.FFN_DOWN:      "blk.{bid}.ffn_down",
+        MODEL_TENSOR.FFN_UP:        "blk.{bid}.ffn_up",
+    },
+    MODEL_ARCH.GPTJ: {
+        MODEL_TENSOR.TOKEN_EMBD:    "token_embd",
+        MODEL_TENSOR.OUTPUT_NORM:   "output_norm",
+        MODEL_TENSOR.OUTPUT:        "output",
+        MODEL_TENSOR.ATTN_NORM:     "blk.{bid}.attn_norm",
+        MODEL_TENSOR.ATTN_Q:        "blk.{bid}.attn_q",
+        MODEL_TENSOR.ATTN_K:        "blk.{bid}.attn_k",
+        MODEL_TENSOR.ATTN_V:        "blk.{bid}.attn_v",
+        MODEL_TENSOR.ATTN_OUT:      "blk.{bid}.attn_output",
+        MODEL_TENSOR.FFN_DOWN:      "blk.{bid}.ffn_down",
+        MODEL_TENSOR.FFN_UP:        "blk.{bid}.ffn_up",
+    },
     MODEL_ARCH.GPT2: {
         # TODO
     },
@@ -208,31 +248,40 @@ class TensorNameMap:
     mappings_cfg: dict[MODEL_TENSOR, tuple[str, ...]] = {
         # Token embeddings
         MODEL_TENSOR.TOKEN_EMBD: (
-            "gpt_neox.embed_in",           # gptneox
-            "transformer.wte",             # gpt2 mpt
-            "transformer.word_embeddings", # falcon
-            "model.embed_tokens",          # llama-hf
-            "tok_embeddings",              # llama-pth
+            "gpt_neox.embed_in",            # gptneox
+            "transformer.wte",              # gpt2 gpt-j mpt
+            "transformer.word_embeddings",  # falcon
+            "model.embed_tokens",           # llama-hf
+            "tok_embeddings",               # llama-pth
+            "embeddings.word_embeddings",   # bert
+        ),
+
+        # Token type embeddings
+        MODEL_TENSOR.TOKEN_TYPES: (
+            "embeddings.token_type_embeddings",  # bert
         ),
 
         # Position embeddings
         MODEL_TENSOR.POS_EMBD: (
-            "transformer.wpe", # gpt2
+            "transformer.wpe",                 # gpt2
+            "embeddings.position_embeddings",  # bert
         ),
 
         # Output
         MODEL_TENSOR.OUTPUT: (
-            "embed_out", # gptneox
-            "lm_head",   # gpt2 mpt falcon llama-hf baichuan
-            "output",    # llama-pth
+            "embed_out",  # gptneox
+            "lm_head",    # gpt2 gpt-j mpt falcon llama-hf baichuan
+            "output",     # llama-pth
         ),
 
         # Output norm
         MODEL_TENSOR.OUTPUT_NORM: (
-            "gpt_neox.final_layer_norm", # gptneox
-            "transformer.ln_f",          # gpt2 falcon
-            "model.norm",                # llama-hf baichuan
-            "norm",                      # llama-pth
+            "gpt_neox.final_layer_norm",  # gptneox
+            "transformer.ln_f",           # gpt2 gpt-j falcon
+            "model.norm",                 # llama-hf baichuan
+            "norm",                       # llama-pth
+            "embeddings.LayerNorm",       # bert
+            "transformer.norm_f",         # mpt
         ),
 
         # Rope frequencies
@@ -244,13 +293,14 @@ class TensorNameMap:
     block_mappings_cfg: dict[MODEL_TENSOR, tuple[str, ...]] = {
         # Attention norm
         MODEL_TENSOR.ATTN_NORM: (
-            "gpt_neox.layers.{bid}.input_layernorm", # gptneox
-            "transformer.h.{bid}.ln_1",              # gpt2
-            "transformer.blocks.{bid}.norm_1",       # mpt
-            "transformer.h.{bid}.input_layernorm",   # falcon7b
-            "transformer.h.{bid}.ln_mlp",            # falcon40b
-            "model.layers.{bid}.input_layernorm",    # llama-hf
-            "layers.{bid}.attention_norm",           # llama-pth
+            "gpt_neox.layers.{bid}.input_layernorm",           # gptneox
+            "transformer.h.{bid}.ln_1",                        # gpt2 gpt-j
+            "transformer.blocks.{bid}.norm_1",                 # mpt
+            "transformer.h.{bid}.input_layernorm",             # falcon7b
+            "transformer.h.{bid}.ln_mlp",                      # falcon40b
+            "model.layers.{bid}.input_layernorm",              # llama-hf
+            "layers.{bid}.attention_norm",                     # llama-pth
+            "encoder.layer.{bid}.attention.output.LayerNorm",  # bert
         ),
 
         # Attention norm 2
@@ -260,38 +310,46 @@ class TensorNameMap:
 
         # Attention query-key-value
         MODEL_TENSOR.ATTN_QKV: (
-            "gpt_neox.layers.{bid}.attention.query_key_value",    # gptneox
-            "transformer.h.{bid}.attn.c_attn",                    # gpt2
-            "transformer.blocks.{bid}.attn.Wqkv",                 # mpt
-            "transformer.h.{bid}.self_attention.query_key_value", # falcon
+            "gpt_neox.layers.{bid}.attention.query_key_value",     # gptneox
+            "transformer.h.{bid}.attn.c_attn",                     # gpt2
+            "transformer.blocks.{bid}.attn.Wqkv",                  # mpt
+            "transformer.h.{bid}.self_attention.query_key_value",  # falcon
         ),
 
         # Attention query
         MODEL_TENSOR.ATTN_Q: (
-            "model.layers.{bid}.self_attn.q_proj", # llama-hf
-            "layers.{bid}.attention.wq",           # llama-pth
+            "model.layers.{bid}.self_attn.q_proj",       # llama-hf
+            "layers.{bid}.attention.wq",                 # llama-pth
+            "encoder.layer.{bid}.attention.self.query",  # bert
+            "transformer.h.{bid}.attn.q_proj",           # gpt-j
         ),
 
         # Attention key
         MODEL_TENSOR.ATTN_K: (
-            "model.layers.{bid}.self_attn.k_proj", # llama-hf
-            "layers.{bid}.attention.wk",           # llama-pth
+            "model.layers.{bid}.self_attn.k_proj",     # llama-hf
+            "layers.{bid}.attention.wk",               # llama-pth
+            "encoder.layer.{bid}.attention.self.key",  # bert
+            "transformer.h.{bid}.attn.k_proj",         # gpt-j
         ),
 
         # Attention value
         MODEL_TENSOR.ATTN_V: (
-            "model.layers.{bid}.self_attn.v_proj", # llama-hf
-            "layers.{bid}.attention.wv",           # llama-pth
+            "model.layers.{bid}.self_attn.v_proj",       # llama-hf
+            "layers.{bid}.attention.wv",                 # llama-pth
+            "encoder.layer.{bid}.attention.self.value",  # bert
+            "transformer.h.{bid}.attn.v_proj",           # gpt-j
         ),
 
         # Attention output
         MODEL_TENSOR.ATTN_OUT: (
-            "gpt_neox.layers.{bid}.attention.dense",    # gptneox
-            "transformer.h.{bid}.attn.c_proj",          # gpt2
-            "transformer.blocks.{bid}.attn.out_proj",   # mpt
-            "transformer.h.{bid}.self_attention.dense", # falcon
-            "model.layers.{bid}.self_attn.o_proj",      # llama-hf
-            "layers.{bid}.attention.wo",                # llama-pth
+            "gpt_neox.layers.{bid}.attention.dense",       # gptneox
+            "transformer.h.{bid}.attn.c_proj",             # gpt2
+            "transformer.blocks.{bid}.attn.out_proj",      # mpt
+            "transformer.h.{bid}.self_attention.dense",    # falcon
+            "model.layers.{bid}.self_attn.o_proj",         # llama-hf
+            "layers.{bid}.attention.wo",                   # llama-pth
+            "encoder.layer.{bid}.attention.output.dense",  # bert
+            "transformer.h.{bid}.attn.out_proj",           # gpt-j
         ),
 
         # Rotary embeddings
@@ -302,21 +360,24 @@ class TensorNameMap:
 
         # Feed-forward norm
         MODEL_TENSOR.FFN_NORM: (
-            "gpt_neox.layers.{bid}.post_attention_layernorm", # gptneox
-            "transformer.h.{bid}.ln_2",                       # gpt2
-            "transformer.blocks.{bid}.norm_2",                # mpt
-            "model.layers.{bid}.post_attention_layernorm",    # llama-hf
-            "layers.{bid}.ffn_norm",                          # llama-pth
+            "gpt_neox.layers.{bid}.post_attention_layernorm",  # gptneox
+            "transformer.h.{bid}.ln_2",                        # gpt2
+            "transformer.blocks.{bid}.norm_2",                 # mpt
+            "model.layers.{bid}.post_attention_layernorm",     # llama-hf
+            "layers.{bid}.ffn_norm",                           # llama-pth
+            "encoder.layer.{bid}.output.LayerNorm",            # bert
         ),
 
         # Feed-forward up
         MODEL_TENSOR.FFN_UP: (
-            "gpt_neox.layers.{bid}.mlp.dense_h_to_4h", # gptneox
-            "transformer.h.{bid}.mlp.c_fc",            # gpt2
-            "transformer.blocks.{bid}.ffn.up_proj",    # mpt
-            "transformer.h.{bid}.mlp.dense_h_to_4h",   # falcon
-            "model.layers.{bid}.mlp.up_proj",          # llama-hf
-            "layers.{bid}.feed_forward.w3",            # llama-pth
+            "gpt_neox.layers.{bid}.mlp.dense_h_to_4h",  # gptneox
+            "transformer.h.{bid}.mlp.c_fc",             # gpt2
+            "transformer.blocks.{bid}.ffn.up_proj",     # mpt
+            "transformer.h.{bid}.mlp.dense_h_to_4h",    # falcon
+            "model.layers.{bid}.mlp.up_proj",           # llama-hf
+            "layers.{bid}.feed_forward.w3",             # llama-pth
+            "encoder.layer.{bid}.intermediate.dense",   # bert
+            "transformer.h.{bid}.mlp.fc_in",            # gpt-j
         ),
 
         # Feed-forward gate
@@ -327,12 +388,14 @@ class TensorNameMap:
 
         # Feed-forward down
         MODEL_TENSOR.FFN_DOWN: (
-            "gpt_neox.layers.{bid}.mlp.dense_4h_to_h", # gptneox
-            "transformer.h.{bid}.mlp.c_proj",          # gpt2
-            "transformer.blocks.{bid}.ffn.down_proj",  # mpt
-            "transformer.h.{bid}.mlp.dense_4h_to_h",   # falcon
-            "model.layers.{bid}.mlp.down_proj",        # llama-hf
-            "layers.{bid}.feed_forward.w2",            # llama-pth
+            "gpt_neox.layers.{bid}.mlp.dense_4h_to_h",  # gptneox
+            "transformer.h.{bid}.mlp.c_proj",           # gpt2
+            "transformer.blocks.{bid}.ffn.down_proj",   # mpt
+            "transformer.h.{bid}.mlp.dense_4h_to_h",    # falcon
+            "model.layers.{bid}.mlp.down_proj",         # llama-hf
+            "layers.{bid}.feed_forward.w2",             # llama-pth
+            "encoder.layer.{bid}.output.dense",         # bert
+            "transformer.h.{bid}.mlp.fc_out",           # gpt-j
         ),
     }