This is an announcement for the paper "A representation theorem for singular integral operators on spaces of homogeneous type" by Paul F.X. Mueller and Markus Passenbrunner. Abstract: Let (X,d,\mu) be a space of homogeneous type and E a UMD Banach space. Under the assumption mu({x})=0 for all x in X, we prove a representation theorem for singular integral operators on (X,d,mu) as a series of simple shifts and rearrangements plus two paraproducts. This gives a T(1) Theorem in this setting. Archive classification: math.FA Mathematics Subject Classification: 42B20; 60G42; 46E40; 47B38 The source file(s), Basis.eps: 11807 bytes The paper may be downloaded from the archive by web browser from URL http://front.math.ucdavis.edu/1001.4926 or http://arXiv.org/abs/1001.4926 or by email in unzipped form by transmitting an empty message with subject line uget 1001.4926 or in gzipped form by using subject line get 1001.4926 to: math@arXiv.org.