diff --git a/libs/core/langchain_core/runnables/graph_mermaid.py b/libs/core/langchain_core/runnables/graph_mermaid.py
index 1d06095b7b7..1e05a5af610 100644
--- a/libs/core/langchain_core/runnables/graph_mermaid.py
+++ b/libs/core/langchain_core/runnables/graph_mermaid.py
@@ -11,6 +11,8 @@ from langchain_core.runnables.graph import (
     NodeStyles,
 )
 
+MARKDOWN_SPECIAL_CHARS = "*_`"
+
 
 def draw_mermaid(
     nodes: Dict[str, Node],
@@ -58,13 +60,19 @@ def draw_mermaid(
         default_class_label = "default"
         format_dict = {default_class_label: "{0}({1})"}
         if first_node is not None:
-            format_dict[first_node] = "{0}([{0}]):::first"
+            format_dict[first_node] = "{0}([{1}]):::first"
         if last_node is not None:
-            format_dict[last_node] = "{0}([{0}]):::last"
+            format_dict[last_node] = "{0}([{1}]):::last"
 
         # Add nodes to the graph
         for key, node in nodes.items():
-            label = node.name.split(":")[-1]
+            node_name = node.name.split(":")[-1]
+            label = (
+                f"<p>{node_name}</p>"
+                if node_name.startswith(tuple(MARKDOWN_SPECIAL_CHARS))
+                and node_name.endswith(tuple(MARKDOWN_SPECIAL_CHARS))
+                else node_name
+            )
             if node.metadata:
                 label = (
                     f"{label}<hr/><small><em>"
diff --git a/libs/core/tests/unit_tests/runnables/__snapshots__/test_graph.ambr b/libs/core/tests/unit_tests/runnables/__snapshots__/test_graph.ambr
index d1f1b20a49c..399f66aef09 100644
--- a/libs/core/tests/unit_tests/runnables/__snapshots__/test_graph.ambr
+++ b/libs/core/tests/unit_tests/runnables/__snapshots__/test_graph.ambr
@@ -1040,7 +1040,7 @@
   	PromptTemplate(PromptTemplate)
   	FakeListLLM(FakeListLLM)
   	Parallel_as_list_as_str_Input(Parallel<as_list,as_str>Input)
-  	Parallel_as_list_as_str_Output([Parallel_as_list_as_str_Output]):::last
+  	Parallel_as_list_as_str_Output([Parallel<as_list,as_str>Output]):::last
   	CommaSeparatedListOutputParser(CommaSeparatedListOutputParser)
   	conditional_str_parser_input(conditional_str_parser_input)
   	conditional_str_parser_output(conditional_str_parser_output)
@@ -1067,14 +1067,14 @@
   '''
   %%{init: {'flowchart': {'curve': 'linear'}}}%%
   graph TD;
-  	__start__([__start__]):::first
+  	__start__([<p>__start__</p>]):::first
   	outer_1(outer_1)
   	inner_1_inner_1(inner_1)
   	inner_1_inner_2(inner_2<hr/><small><em>__interrupt = before</em></small>)
   	inner_2_inner_1(inner_1)
   	inner_2_inner_2(inner_2)
   	outer_2(outer_2)
-  	__end__([__end__]):::last
+  	__end__([<p>__end__</p>]):::last
   	__start__ --> outer_1;
   	inner_1_inner_2 --> outer_2;
   	inner_2_inner_2 --> outer_2;
@@ -1097,13 +1097,13 @@
   '''
   %%{init: {'flowchart': {'curve': 'linear'}}}%%
   graph TD;
-  	__start__([__start__]):::first
+  	__start__([<p>__start__</p>]):::first
   	parent_1(parent_1)
   	child_child_1_grandchild_1(grandchild_1)
   	child_child_1_grandchild_2(grandchild_2<hr/><small><em>__interrupt = before</em></small>)
   	child_child_2(child_2)
   	parent_2(parent_2)
-  	__end__([__end__]):::last
+  	__end__([<p>__end__</p>]):::last
   	__start__ --> parent_1;
   	child_child_2 --> parent_2;
   	parent_1 --> child_child_1_grandchild_1;