diff --git a/README.md b/README.md
index 26e25945..fcde90c2 100644
--- a/README.md
+++ b/README.md
@@ -250,6 +250,7 @@ A collective list of JSON APIs for use in web development.
 | Transport for Boston, MA, USA | MBTA API | No | [Go!](http://realtime.mbta.com/Portal/Home/Documents)
 | TransitLand | Transit Aggregation | No | [Go!](https://transit.land/documentation/datastore/api-endpoints.html)
 | Transport for Rio de Janeiro, Brazil | Prefeitura do Rio (City Hall) | No | [Go!](http://data.rio/group/transporte-e-mobilidade) |
+| Trasport for Madrid, Spain | Madrid BUS transport API | No, but apiKey query string |[Go!](http://opendata.emtmadrid.es/Servicios-web/BUS) |
 
 ### University
 | API | Description | OAuth |Link |