One of the most exciting frontiers in observational astronomy is the search for galaxies at the highest redshifts and characterizing their evolution with cosmic time. These searches are important not only for understanding the early growth and evolution of galaxies at early times, but also for evaluating their likely contribution to the reionization of the universe. Searches for galaxies at the highest redshifts (z>=7) have been challenging because of the need for deep near-IR data and the technological difficulties associated with obtaining such data. However, progress is being made and now the number of credible z>=7 galaxies is of order 20. At slightly lower redshifts (z~4-6), the number of galaxies known is much larger, with >20000 galaxies identified, and reach to luminosities as faint as -16 AB mag (0.01 L*). The breadth of these samples in redshift and luminosity (and multiwavelength coverage with HST, Spitzer, and ground-based telescopes) has allowed us to characterize both the properties and the evolution of these distant galaxies in great detail. In this presentation, I will summarize some of the most important trends that are emerging in observations of galaxies at the highest redshifts.
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