Nations Church is an English speaking (with Turkish translation) church in Mecidiyekoy (convenient to the Metrobus and two stops from Taksim via the metro).
We meet on Sundays from 11:00-12:30.
http://nationschurch-istanbul.weebly.com/
http://nationschurchistanbul.blogspot.com/
http://www.facebook.com/NationsChurch.Istanbul?ref=ts&fref=ts