The Cosmic Evolution Survey (COSMOS) is a Hubble Space Telescope (HST) treasury project. The COSMOS aims to perform a 2 square degree imaging survey of an equatorial field in I(F814W) band, using the Advanced Camera for Surveys (ACS). Such a wide field survey, combined with ground-based photometric and spectroscopic data, is essential to understand the interplay between large scale structure, evolution and formation of galaxies and dark matter. In 2004, we have obtained high-quality, broad band images of the COSMOS field (B, V, r', i', and z') using Suprime-Cam on the Subaru Telescope, and we have started our new optical multi-band program, COSMOS-21 in 2005. Here, we present a brief summary of the current status of the COSMOS project together with contributions from the Subaru Telescope. Our future Subaru program, COSMOS-21, is also discussed briefly.

• YOSHIAKI TANIGUCHI(Astronomical Institute, Graduate School of Science, Tohoku University)
• N. Z. SCOVILLE(Department of Astronomy, MS 105-24, California Institute of Technology/Institute for Astronomy, University of Hawaii)
• D. B. SANDERS(Institute for Astronomy, University of Hawaii)
• B. MOBASHER(Space Telescope Science Institute)
• H. AUSSEL(Service d'Astrophysique, DSM/DAPNIA/CEA-Saclay)
• P. CAPAK(Department of Astronomy, MS 105-24, California Institute of Technology)
• M. AJIKI(Astronomical Institute, Graduate School of Science, Tohoku University)
• T. MURAYAMA(Astronomical Institute, Graduate School of Science, Tohoku University)
• S. MIYAZAK(ISubaru Telescope, 650 National Astronomical Observatory of Japan)
• Y. KOMIYAMA(National Astronomical Observatory of Japan)
• T. NAGAO(Astronomical Institute, Graduate School of Science, Tohoku University/Osservatorio Astrofisico di Arcetri)
• S. SASAKI(Astronomical Institute, Graduate School of Science, Tohoku University)
• R. SUMIYA(Astronomical Institute, Graduate School of Science, Tohoku University)
• J. KODA(Department of Astronomy, MS 105-24, California Institute of Technology)
• L. HEINLEIN(Department of Astronomy, MS 105-24, California Institute of Technology)
• Y. HATAKEYAMA(Astronomical Institute, Graduate School of Science, Tohoku University)
• H. KAROJI(Subaru Telescope, 650 National Astronomical Observatory of Japan)
• COSMOS TEAM