diff --git a/providers/cncf/kubernetes/src/airflow/providers/cncf/kubernetes/operators/pod.py b/providers/cncf/kubernetes/src/airflow/providers/cncf/kubernetes/operators/pod.py
index 420ebddb7256c..8a94e1fe1174d 100644
--- a/providers/cncf/kubernetes/src/airflow/providers/cncf/kubernetes/operators/pod.py
+++ b/providers/cncf/kubernetes/src/airflow/providers/cncf/kubernetes/operators/pod.py
@@ -1135,7 +1135,11 @@ def _build_find_pod_label_selector(self, context: Context | None = None, *, excl
             **self.labels,
             **self._get_ti_pod_labels(context, include_try_number=False),
         }
-        label_strings = [f"{label_id}={label}" for label_id, label in sorted(labels.items())]
+        labels = normalize_labels_dict(labels)
+        label_strings = [
+            f"{label_id}={label}"
+            for label_id, label in sorted(labels.items())
+        ]
         labels_value = ",".join(label_strings)
         if exclude_checked:
             labels_value = f"{labels_value},{self.POD_CHECKED_KEY}!=True"
@@ -1363,3 +1367,10 @@ def __exit__(self, exctype, excinst, exctb) -> bool:
             logger = logging.getLogger(__name__)
             logger.exception(excinst)
         return True
+
+# --- Helper functions ---
+def normalize_labels_dict(labels: dict) -> dict:
+    """
+    Return a copy of the labels dict with all None values replaced by empty strings.
+    """
+    return {k: ('' if v is None else v) for k, v in labels.items()}
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