diff --git a/docs/authors.rst b/docs/authors.rst
index b892b68c..3fb9468e 100644
--- a/docs/authors.rst
+++ b/docs/authors.rst
@@ -107,6 +107,7 @@ Authors
 * Paul Cunnane
 * Paul Donohue
 * Paulo Poiati
+* Pedro Henrique Vicente de Sousa
 * Peter J. Farrell
 * Rael Max
 * Ramiro Morales
diff --git a/docs/changelog.rst b/docs/changelog.rst
index b2c6de40..27d61311 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -10,6 +10,9 @@ New flavors:
 
 New fields for existing flavors:
 
+- Added `get_state_name_from_state_abbreviation` and `STATE_CHOICES_DICT` to ``localflavor.br.utils``.
+  The new utility returns the full Brazilian state name from a UF abbreviation, or ``None`` for invalid inputs
+  (`gh-510 <https://github.com/django/django-localflavor/pull/510>`_).
 - Added CIN Number field in Morocco flavor
   (`gh-705 <https://github.com/django/django-localflavor/pull/507>`_).
 
diff --git a/localflavor/br/utils.py b/localflavor/br/utils.py
new file mode 100644
index 00000000..cb65d79d
--- /dev/null
+++ b/localflavor/br/utils.py
@@ -0,0 +1,24 @@
+from .br_states import STATE_CHOICES
+
+# Mapping UF -> full state name
+STATE_CHOICES_DICT = dict(STATE_CHOICES)
+
+def get_state_name_from_state_abbreviation(abbreviation=None):
+    """
+    Given a Brazilian state abbreviation (UF), return the full state name.
+
+    Returns:
+        str | None:
+            - The full state name if the abbreviation exists
+            - None if the abbreviation is invalid
+
+    Example:
+        get_state_name_from_state_abbreviation("RJ") -> "Rio de Janeiro"
+        get_state_name_from_state_abbreviation("sp") -> "São Paulo"
+        get_state_name_from_state_abbreviation("XX") -> None
+        get_state_name_from_state_abbreviation() -> None
+    """
+    if not isinstance(abbreviation, str):
+        return None
+
+    return STATE_CHOICES_DICT.get(abbreviation.upper())
diff --git a/tests/test_br/test_br.py b/tests/test_br/test_br.py
index 44067cd4..6f14213f 100644
--- a/tests/test_br/test_br.py
+++ b/tests/test_br/test_br.py
@@ -3,6 +3,7 @@
 from localflavor.br import models
 from localflavor.br.forms import (BRCNPJField, BRCPFField, BRProcessoField, BRStateChoiceField, BRStateSelect,
                                   BRZipCodeField)
+from localflavor.br.utils import get_state_name_from_state_abbreviation
 from tests.test_br.forms import BRPersonProfileForm
 
 
@@ -281,3 +282,26 @@ def test_BRPostalCodeField(self):
         self.assertEqual(instance.max_length, new_instance.max_length)
         self.assertEqual(instance.description, new_instance.description)
         self.assertEqual(instance.validators, new_instance.validators)
+
+
+class GetStateNameFromAbbreviationTests(SimpleTestCase):
+
+    def test_valid_state_abbreviation(self):
+        self.assertEqual(
+            get_state_name_from_state_abbreviation("pb"),
+            "Paraíba"
+        )
+        self.assertEqual(
+            get_state_name_from_state_abbreviation("RJ"),
+            "Rio de Janeiro"
+        )
+
+    def test_invalid_state_abbreviation(self):
+        self.assertIsNone(get_state_name_from_state_abbreviation("XX"))
+        self.assertIsNone(get_state_name_from_state_abbreviation("None"))
+
+    def test_non_string_input(self):
+        self.assertIsNone(get_state_name_from_state_abbreviation(123))
+        self.assertIsNone(get_state_name_from_state_abbreviation(1.5))
+        self.assertIsNone(get_state_name_from_state_abbreviation(None))
+        self.assertIsNone(get_state_name_from_state_abbreviation([None]))