Several learning systems have been developed for semantic parsing, many of them recently (Zelle and Mooney, 1996; Zettlemoyer and Collins, 2005; Ge and Mooney, 2005;<cite> Kate and Mooney, 2006)</cite> . These systems use supervised learning methods which only utilize annotated NL sentences. In this paper we present, to our knowledge, the first semi-supervised learning system for semantic parsing.