Loneliness is a major health concern for immigrant older adults. This study explores social influences on loneliness in neighbourhoods among immigrant older adults across five major urban centres in Ontario and Alberta, Canada. Data were collected from 435 older immigrants who participated in the Inclusive Communities for Older Immigrants (ICOI) Project. Data were analysed using multiple linear regression (MLR) to identify the influences of neighbourhood factors, family support, duration of residency in Canada, English proficiency, and gender. Results indicate that increased engagement in ethnic enclaves, not being reliant on transportation for social interactions, and perceptions of neighbourhood cohesion are associated with a significant reduction in loneliness. These associations remain significant after accounting for family support and language proficiency. This calls for further research into the interconnections among interpersonal factors, neighbourhood-level factors, and family and community-level support to address key influences on loneliness in this population.