This is a collection of the papers presented at the 8th Texas International Conference on Approximation Theory. The proceedings of the previous seven conferences were published by Academic Press. The present one is interdisciplinary in nature. Over 35% of the papers are on "wavelets". The plenary speakers include Ingrid Daubechies, Charles Micchelli, Wolfgang Dahmen, Ward Cheney, R.Q. Jia, Robert Schaback, and Doron Lubinsky. The first Popov prize was given to Albert Cohen, who also delivered an invited address. This conference was dedicated to Ward Cheney in honor of his 65th Birthday.