hep-ph/9412309 Limits on the Ununified Standard Model Authors: R.S. Chivukula, E.H. Simmons, J. Terning Comments: 14 pages, plain TeX, 2 (uuencoded) postscript figures, figures also available at _this http URL_ Report-no: BUHEP-94-37 Journal-ref: Phys. Lett. B346 (1995) 284 The ununified standard model is an extension of the standard model that contains separate electroweak gauge groups for quarks and leptons. When it was originally proposed, data allowed the new gauge bosons to be quite light. We use recent data from precision electroweak measurements to put stringent bounds on the ununified standard model. In particular, at the 95% confidence level, we find that the ununified gauge bosons must have masses above about 2 TeV.