diff --git a/utils/ci/parse_tsan_reports.py b/utils/ci/parse_tsan_reports.py
new file mode 100755
index 00000000000..95fa43674b3
--- /dev/null
+++ b/utils/ci/parse_tsan_reports.py
@@ -0,0 +1,271 @@
+#!/usr/bin/env python3
+"""
+  Copyright 2025-2026 Hewlett Packard Enterprise Development LP
+  All rights reserved.
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+  Parse ThreadSanitizer log files produced during CI unit test runs.
+
+  TSan report format:
+    WARNING: ThreadSanitizer: data race (pid=12345)
+      Write of size 4 at 0xADDR by thread T1:
+        #0 func_name /path/file.c:42 (binary+0xaddr)
+      Previous read of size 4 at 0xADDR by thread T2:
+        #0 other_func /path/file.c:7 (binary+0xaddr)
+    SUMMARY: ThreadSanitizer: data race ...
+
+  Outputs:
+    * SARIF 2.1.0 file  -> uploaded to the Security / Code scanning tab
+    * Markdown summary  -> appended to $GITHUB_STEP_SUMMARY
+
+  Invocation (from .github/workflows/unit-test-template.yml, called by unit-testing.yml):
+
+    python3 utils/ci/parse_tsan_reports.py \
+        --report-dir  sanitizer-logs          \
+        --source-root "$(pwd)"                \
+        --sarif-out   test-results/tsan.sarif \
+        --summary-out test-results/tsan_summary.md
+
+  TSan must be started with:
+    TSAN_OPTIONS="log_path=<dir>/tsan:exitcode=42:second_deadlock_stack=1"
+  so that each process writes its own tsan.<pid> file into the shared
+  sanitizer-logs/ directory.
+"""
+
+import re
+import sys
+from dataclasses import dataclass, field
+from pathlib import Path
+from typing import Optional
+
+from sanitizer_report_base import FILE_LINE_COL, StackFrame, build_sarif_doc, build_summary_md
+from sanitizer_report_base import collect_reports as _collect_reports
+from sanitizer_report_base import (get_args, main_runner, report_heading, resolve_paths_threaded,
+                                   sarif_location)
+
+# ── Data structures ───────────────────────────────────────────────────────────
+
+
+@dataclass
+class TsanThread:
+    """One stack (write/read/mutex thread) within a TSan report.
+
+    Only the frames are needed: the descriptive role line ("Write of size 4
+    at 0xADDR by thread T1:", etc.) is already preserved verbatim in the
+    report's own `raw` text, which is what gets rendered.
+    """
+    frames: list = field(default_factory=list)  # list[StackFrame]
+
+
+@dataclass
+class TsanReport:
+    """One TSan error report (race, deadlock, etc.) parsed from a tsan.<pid> log."""
+
+    pid: str
+    error_type: str      # e.g. "data-race", "lock-order-inversion", "use-of-invalid-mutex"
+    error_summary: str   # the full WARNING: ... line
+    threads: list = field(default_factory=list)  # list[TsanThread]
+    raw: str = ""
+    test_name: str = ""  # suite name, filled in by collect_reports()
+
+
+# ── Parsing ───────────────────────────────────────────────────────────────────
+
+# Matches the header line of a TSan report:
+#   WARNING: ThreadSanitizer: data race (pid=12345)
+_RE_HEADER = re.compile(
+    r"WARNING: ThreadSanitizer:\s+(?P<type>.+?)\s+\(pid=(?P<pid>\d+)\)"
+)
+
+# Matches a thread role descriptor line:
+#   Write of size 4 at 0xADDR by thread T1:
+#   Previous read of size 4 at 0xADDR by main thread:
+#   Mutex M1 ... created by main thread:
+_RE_THREAD_ROLE = re.compile(
+    r"^  (?:(?:Previous|Subsequent)\s+)?(?:Write|Read|Mutex|Lock)\s+",
+    re.IGNORECASE,
+)
+
+# Matches TSan stack frames:
+#   #0 func_name /path/file.c:42 (binary+0xaddr)
+#   #0 func_name /path/file.c:42:7 (binary+0xaddr)
+# Lacks the "0xADDR" address ASan/UBSan have and has a trailing "(binary+off)",
+# so it composes its own regex from the shared FILE_LINE_COL fragment rather
+# than reusing ADDR_FRAME_RE.
+_RE_FRAME = re.compile(
+    rf"^\s+#(?P<idx>\d+)\s+(?P<func>\S+)"
+    rf"(?:\s+{FILE_LINE_COL})?"
+    rf"(?:\s+\([^)]+\))?$",
+    re.IGNORECASE,
+)
+
+
+def _normalize_error_type(raw: str) -> str:
+    """Convert 'data race' → 'data-race', etc."""
+    return re.sub(r"[^a-z0-9]+", "-", raw.lower().strip()).strip("-") or "race"
+
+
+def parse_report_file(path: Path) -> list:
+    """Parse one TSan log file. Returns a list of TsanReport objects."""
+    text = path.read_text(errors="replace")
+    if "ThreadSanitizer" not in text:
+        return []
+
+    reports = []
+    current: Optional[TsanReport] = None
+    current_thread: Optional[TsanThread] = None
+
+    for line in text.splitlines():
+        m = _RE_HEADER.match(line)
+        if m:
+            # Commit any in-progress report
+            if current_thread is not None and current is not None:
+                current.threads.append(current_thread)
+                current_thread = None
+            if current is not None:
+                reports.append(current)
+            current = TsanReport(
+                pid=m.group("pid"),
+                error_type=_normalize_error_type(m.group("type")),
+                error_summary=line.strip(),
+                threads=[],
+                raw=line + "\n",
+            )
+            continue
+
+        if current is None:
+            continue
+        current.raw += line + "\n"
+
+        # Detect thread role lines
+        if _RE_THREAD_ROLE.match(line):
+            if current_thread is not None:
+                current.threads.append(current_thread)
+            current_thread = TsanThread(frames=[])
+            continue
+
+        # Stack frames
+        m = _RE_FRAME.match(line)
+        if m and current_thread is not None:
+            current_thread.frames.append(StackFrame(
+                index=int(m.group("idx")),
+                function=m.group("func"),
+                file=m.group("file"),
+                line=int(m.group("line")) if m.group("line") else None,
+                column=int(m.group("col")) if m.group("col") else None,
+                rel_file=None,
+            ))
+
+    # Commit any in-progress report
+    if current_thread is not None and current is not None:
+        current.threads.append(current_thread)
+    if current is not None:
+        reports.append(current)
+
+    return reports
+
+
+def collect_reports(report_dir: Path) -> list:
+    """Return parsed TsanReport objects for every tsan.<pid> file found."""
+    return _collect_reports(report_dir, "tsan", parse_report_file)
+
+
+def _primary_frame(report: TsanReport) -> Optional[StackFrame]:
+    """Return the innermost in-project frame from the first thread stack."""
+    for thread in report.threads:
+        for frame in thread.frames:
+            if frame.rel_file and frame.line:
+                return frame
+    return None
+
+
+# ── SARIF 2.1.0 ───────────────────────────────────────────────────────────────
+
+_TOOL_NAME = "ThreadSanitizer"
+_TOOL_URI = "https://clang.llvm.org/docs/ThreadSanitizer.html"
+
+
+def build_sarif(reports: list) -> dict:
+    """Build a SARIF 2.1.0 document from the list of TsanReport objects."""
+    rules: dict = {}
+    results = []
+
+    for report in reports:
+        rule_id = f"tsan/{report.error_type}"
+        if rule_id not in rules:
+            rules[rule_id] = {
+                "id": rule_id,
+                "name": "".join(
+                    w.capitalize() for w in report.error_type.split("-")
+                ),
+                "shortDescription": {"text": report.error_type.replace("-", " ")},
+                "helpUri": _TOOL_URI,
+                "properties": {"tags": ["tsan", "thread-safety"]},
+            }
+
+        primary = _primary_frame(report)
+        locations = []
+        if primary:
+            loc = sarif_location(primary.rel_file, primary.line, primary.column)
+            if loc:
+                locations.append(loc)
+
+        results.append({
+            "ruleId": rule_id,
+            "level": "error",
+            "message": {"text": report.error_summary},
+            "locations": locations,
+        })
+
+    return build_sarif_doc(_TOOL_NAME, _TOOL_URI, list(rules.values()), results)
+
+
+# ── Markdown summary ──────────────────────────────────────────────────────────
+
+_TSAN_NOTE = (
+    "> **Note:** Some findings may be false positives due to Argobots ULT "
+    "context switches. Add suppressions to `utils/test_tsan.supp` as needed."
+)
+
+_TSAN_NO_ISSUES = "#### ✅ ThreadSanitizer — No thread-safety issues detected"
+
+
+def _tsan_row(i: int, report) -> list:
+    """Return summary table cells for one TSan report."""
+    primary = _primary_frame(report)
+    loc = f"`{primary.rel_file}:{primary.line}`" if primary else "_(no source)_"
+    test_name = report.test_name or "_(unknown)_"
+    return [str(i), test_name, f"`{report.error_type}`", loc, report.error_summary[:80]]
+
+
+def build_summary(reports: list) -> str:
+    """Return a Markdown summary block for the GitHub job summary."""
+    return build_summary_md(
+        tool_name="ThreadSanitizer",
+        emoji="❌",
+        items=reports,
+        headers=["#", "Test", "Error type", "Primary location", "Description"],
+        row_fn=_tsan_row,
+        details_fn=report_heading,
+        note=_TSAN_NOTE,
+        no_items_msg=_TSAN_NO_ISSUES,
+    )
+
+
+# ── Main ──────────────────────────────────────────────────────────────────────
+
+def main() -> int:
+    """Entry point."""
+    return main_runner(
+        get_args("Parse TSan log files and emit SARIF and a summary."),
+        collect_fn=collect_reports,
+        resolve_fn=resolve_paths_threaded,
+        build_sarif_fn=build_sarif,
+        build_summary_fn=build_summary,
+        tool_label="TSan",
+    )
+
+
+if __name__ == "__main__":
+    sys.exit(main())
diff --git a/utils/cq/words.dict b/utils/cq/words.dict
index 643f134100e..7506ab6ab34 100644
--- a/utils/cq/words.dict
+++ b/utils/cq/words.dict
@@ -37,6 +37,8 @@ MPI
 Makefile
 Mellanox
 MiB
+Mutex
+mutex
 NLT
 NodeSet
 OC
@@ -65,6 +67,7 @@ Skylake
 StackFrame
 SubProcess
 Subdirectories
+TsanThread
 TestFail
 Testcase
 tsan