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This manuscript uses idealized AGCM experiments to explore impacts of observed decadal Atlantic sea surface temperature (SST) changes on El Nino Southern Oscillation teleconnections. Significant regional changes are observed in numerous locations (e.g., Indo‐Pacific and Central Africa) due to the addition of the AMV anomalies. In some regions the teleconnection impacts of AMV forcing appeared to scale with the magnitude of the AMV forcing. However, the AMV induced modulation of temperature and precipitation teleconnections is regionally specific with changes in magnitude, statistical strength, and spatial connection dependent on region. These ENSO teleconnection changes were found to be asymmetric between AMV phases, with negative anomalies appearing to have a larger effect. We hypothesize these changes may be underpinned by a AMV induced modulation and migration of ENSO's equatorial precipitation response. Plain Language Summary: The potential of the Atlantic sea surface temperature (SST) mean state to impact the El Nino Southern Oscillation (ENSO) is analyzed over 24 years using global climate models with different forced Atlantic Ocean mean states. Typical teleconnections of ENSO are investigated finding a significant change in numerous areas which are not found to be globally consistent. Greatest impacts are found to be regionally specific with negative Atlantic anomalies suggested to have a greater impact. In some locations influence was found to scale with the magnitude of the introduced anomaly. It is theorised that these changes are underpinned by a spatial migration in the typical ENSO equatorial precipitation response between different mean states of the Atlantic Ocean. Key Points: Atlantic Multidecadal Variability SSTA can produce statistically significant changes of ENSO teleconnections without any changes in ENSOENSO teleconnection modulation by the AMV was regionally specific with variation in statistical strength and sign relative to the controlTeleconnection modulation is likely a result of tropical Pacific precipitation changes during ENSO induced atmospheric stability changes [ABSTRACT FROM AUTHOR]