diff --git a/ChangeLog b/ChangeLog
index 053bd62..d09ff3b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+2025-10-22
+	* Issue 184: Add investigation:Technician role class
+
 2025-03-18
 	* (7ecdaf4) UCO Issue 629: Revise vocabulary pattern
 
diff --git a/ontology/investigation/investigation.ttl b/ontology/investigation/investigation.ttl
index a572ba4..faf4b99 100644
--- a/ontology/investigation/investigation.ttl
+++ b/ontology/investigation/investigation.ttl
@@ -235,6 +235,17 @@ investigation:SubjectActionLifecycle
 	sh:targetClass investigation:SubjectActionLifecycle ;
 	.
 
+investigation:Technician
+	a
+		owl:Class ,
+		sh:NodeShape
+		;
+	rdfs:subClassOf uco-role:Role ;
+	rdfs:label "Technician"@en ;
+	rdfs:comment "Technician is a role involved in performing technical tasks during investigations, such as evidence collection, preservation, processing, initial analysis, and repair."@en ;
+	sh:targetClass investigation:Technician ;
+	.
+
 investigation:VictimActionLifecycle
 	a
 		owl:Class ,
diff --git a/tests/examples/Makefile b/tests/examples/Makefile
index f79c2a5..daa1e81 100644
--- a/tests/examples/Makefile
+++ b/tests/examples/Makefile
@@ -22,7 +22,8 @@ tests_srcdir := $(top_srcdir)/tests
 
 all: \
   investigative_action_PASS_validation.ttl \
-  investigative_action_XFAIL_validation.ttl
+  investigative_action_XFAIL_validation.ttl \
+  technician_role_PASS_validation.ttl
 
 .PRECIOUS: \
   %_validation.ttl
@@ -63,7 +64,8 @@ all: \
 
 check: \
   investigative_action_PASS_validation.ttl \
-  investigative_action_XFAIL_validation.ttl
+  investigative_action_XFAIL_validation.ttl \
+  technician_role_PASS_validation.ttl
 	source $(top_srcdir)/venv/bin/activate \
 	  && pytest \
 	    --log-level=DEBUG
diff --git a/tests/examples/technician_role_PASS.json b/tests/examples/technician_role_PASS.json
new file mode 100644
index 0000000..0952a71
--- /dev/null
+++ b/tests/examples/technician_role_PASS.json
@@ -0,0 +1,64 @@
+{
+    "@context": {
+        "kb": "http://example.org/kb/",
+        "case-investigation": "https://ontology.caseontology.org/case/investigation/",
+        "uco-action": "https://ontology.unifiedcyberontology.org/uco/action/",
+        "uco-core": "https://ontology.unifiedcyberontology.org/uco/core/",
+        "uco-observable": "https://ontology.unifiedcyberontology.org/uco/observable/",
+        "xsd": "http://www.w3.org/2001/XMLSchema#"
+    },
+    "@graph": [
+        {
+            "@id": "kb:technician-identity-9a8b7c6d-5e4f-3a2b-1c0d-9e8f7a6b5c4d",
+            "@type": "uco-core:Identity",
+            "uco-core:name": "Forensic Technician Williams",
+            "uco-core:role": {
+                "@id": "kb:technician-role-c8d9f2e1-a4b7-4c3e-8f5d-6a1e9b2c7f4a"
+            }
+        },
+        {
+            "@id": "kb:technician-role-c8d9f2e1-a4b7-4c3e-8f5d-6a1e9b2c7f4a",
+            "@type": "case-investigation:Technician",
+            "uco-core:startTime": {
+                "@type": "xsd:dateTime",
+                "@value": "2024-01-15T09:00:00Z"
+            }
+        },
+        {
+            "@id": "kb:disk-image-3f8a2c7d-b1e9-4d3c-a5f7-1b2e4a9c8d6f",
+            "@type": "uco-observable:File",
+            "uco-core:description": "Forensic disk image of evidence laptop",
+            "uco-core:hasFacet": {
+                "@id": "kb:disk-image-facet-a3c9f7e1-d5b2-4a8e-9c3f-7e1a5d9b2c4f",
+                "@type": "uco-observable:FileFacet",
+                "uco-observable:fileName": "evidence-laptop-001.dd",
+                "uco-observable:sizeInBytes": 512000000000
+            }
+        },
+        {
+            "@id": "kb:disk-imaging-action-5d7a3e9f-c2b4-4f8a-9e3d-6c1b5a8f7e2d",
+            "@type": "case-investigation:InvestigativeAction",
+            "uco-core:name": "Disk imaging of evidence laptop",
+            "uco-action:performer": {
+                "@id": "kb:technician-role-c8d9f2e1-a4b7-4c3e-8f5d-6a1e9b2c7f4a"
+            },
+            "uco-action:result": [
+                {
+                    "@id": "kb:disk-image-3f8a2c7d-b1e9-4d3c-a5f7-1b2e4a9c8d6f"
+                },
+                {
+                    "@id": "kb:provenance-record-e9f5c1a7-d4b8-4a6e-9c2f-3e5d7a9b1c4f"
+                }
+            ]
+        },
+        {
+            "@id": "kb:provenance-record-e9f5c1a7-d4b8-4a6e-9c2f-3e5d7a9b1c4f",
+            "@type": "case-investigation:ProvenanceRecord",
+            "case-investigation:exhibitNumber": "2024-001-E1",
+            "case-investigation:rootExhibitNumber": "2024-001-E1",
+            "uco-core:object": {
+                "@id": "kb:disk-image-3f8a2c7d-b1e9-4d3c-a5f7-1b2e4a9c8d6f"
+            }
+        }
+    ]
+}
diff --git a/tests/examples/test_validation.py b/tests/examples/test_validation.py
index d873012..f496979 100644
--- a/tests/examples/test_validation.py
+++ b/tests/examples/test_validation.py
@@ -128,3 +128,10 @@ def test_investigative_action_XFAIL_validation() -> None:
         str(NS_CASE_INVESTIGATION.rootExhibitNumber)
       }
     )
+
+def test_technician_role_PASS_validation() -> None:
+    """
+    Confirm the Technician role PASS instance data passes validation.
+    """
+    g = load_validation_graph("technician_role_PASS_validation.ttl", True)
+    assert isinstance(g, rdflib.Graph)