The relationship of intraseasonal variability to ENSO is investigated using daily length-of-day (LOD), atmospheric angular momentum (AAM), west equatorial Pacific (WPAC) wind stress and monthly Nino3 SST data for the years 1976--1999. Strong coherence is found for LOD, AAM, and their residual (representative of oceanic angular momentum and/or unmodeled/underrepresented atmospheric variability) with the regional wind stress at periods near 75 days, a preferred time scale for WPAC Kelvin wave generation. Amplitude envelopes of LOD and AAM filtered at similar periods (60--100 days) are significantly correlated with Nino3 anomalies at an SST lag of 8 months; the LOD-AAM residual correlates at a shorter lag (5 months), with the difference representing an oceanic spin-up time. No significant correlations are found using a band (36--60 days) typifying the global Madden-Julian Oscillation, accounting for the lack of previous MJO-ENSO correlations in the literature. ¿ 2001 American Geophysical Union