diff --git a/dateparser/data/date_translation_data/en.py b/dateparser/data/date_translation_data/en.py
index ecb048c0e..6a79c70fa 100644
--- a/dateparser/data/date_translation_data/en.py
+++ b/dateparser/data/date_translation_data/en.py
@@ -105,6 +105,7 @@
     "week": [
         "week",
         "wk",
+        "w",
         "weeks"
     ],
     "day": [
diff --git a/dateparser_data/supplementary_language_data/date_translation_data/en.yaml b/dateparser_data/supplementary_language_data/date_translation_data/en.yaml
index a4e9a1ad8..ed5e78a1d 100644
--- a/dateparser_data/supplementary_language_data/date_translation_data/en.yaml
+++ b/dateparser_data/supplementary_language_data/date_translation_data/en.yaml
@@ -37,6 +37,7 @@ year:
 month:
     - months
 week:
+    - w
     - weeks
 day:
     - d
diff --git a/tests/test_freshness_date_parser.py b/tests/test_freshness_date_parser.py
index ef1477e9c..4ed485930 100644
--- a/tests/test_freshness_date_parser.py
+++ b/tests/test_freshness_date_parser.py
@@ -135,6 +135,9 @@ def test_relative_past_dates_with_time_as_period(self, date_string, ago, period)
             param("six days ago", ago={"days": 6}, period="day"),
             param("five years ago", ago={"years": 5}, period="year"),
             param("2y ago", ago={"years": 2}, period="year"),
+            # Single-letter week abbreviation (#1257)
+            param("1w ago", ago={"weeks": 1}, period="week"),
+            param("2w ago", ago={"weeks": 2}, period="week"),
             # Fractional units
             param("2.5 hours", ago={"hours": 2.5}, period="day"),
             param("10.75 minutes", ago={"minutes": 10.75}, period="day"),