Electronic Journal of Differential Equations, Vol. 1999(1999), No. 05, pp. 1-7. Title: Regularity of solutions to the Navier-Stokes equation Authors: Dongho Chae (Seoul National Univ., Korea) Hi-Jun Choe (KAIST Taejon, Korea) Abstract: Recently, Beirao da Veiga [15] obtained regularity for the Navier-Stokes equation in R^3 by imposing conditions on the vorticity rather than the velocity. In this article, we obtain regularity by imposing conditions on only two components of the vorticity vector. Submitted February 8, 1999. Published February 28, 1999. Math Subject Classification: 35Q35, 76C99. Key Words: Navier-Stokes equations; regularity conditions.