diff --git a/sigi/context_processors.py b/sigi/context_processors.py
new file mode 100644
index 0000000..34bd01b
--- /dev/null
+++ b/sigi/context_processors.py
@@ -0,0 +1,22 @@
+from django.core.exceptions import ObjectDoesNotExist
+
+from sigi.apps.usuarios.models import Usuario
+
+
+def recupera_usuario(request):
+
+    pk = request.user.pk
+    if pk:
+        try:
+            usuario = Usuario.objects.get(user_id=pk)
+        except ObjectDoesNotExist:
+            return 0
+        else:
+            return usuario.pk
+    else:
+        return 0
+
+
+def usuario_context(request):
+    context = {'usuario_pk': recupera_usuario(request)}
+    return context
diff --git a/sigi/settings/base.py b/sigi/settings/base.py
index 2a29ab1..12556c6 100644
--- a/sigi/settings/base.py
+++ b/sigi/settings/base.py
@@ -32,6 +32,7 @@ SITE_ID = 1
 
 TEMPLATE_CONTEXT_PROCESSORS = DEFAULT_SETTINGS.TEMPLATE_CONTEXT_PROCESSORS + [
     'django.core.context_processors.request',
+    'sigi.context_processors.usuario_context'
 ]
 
 # List of callables that know how to import templates from various sources.