Analysis of intraseasonal (10–100 days) oscillations in the equatorial mesosphere and lower thermosphere (MLT) is presented, based on over five years of velocity data acquired by a radar system at Christmas Island (2 °N, 157 °W), in the central Pacific. Strong peaks in the zonal winds are found at periods of ~60 days, ~35–40 days, and ~22–25 days. These peaks, as well as the mean annual variations of the activity within the various period ranges, are similar to 30–60 day and 20–25 day oscillations that occur in the equatorial troposphere. Weaker (but nonetheless clear) periodicities are also found in the meridional winds at ~60 days and ~35 days. A strong quasi-60-day variation is detected in gravity-wave variances, with much weaker signals at ~40 days and ~25 days. Strong variations in diurnal tidal amplitudes are observed with periods of ~60 days, ~40 days, and ~25 days.