Widespread and common throughout much of Victoria mostly in grassland and grassy woodland.
Four subspecies are recognised, 3 occur in Victoria
Ref: https://vicflora.rbg.vic.gov.au/flora/taxon/65bdff26-00bc-4a73-981a-fcc63540fe91
Convolvulus angustissimus is listed in the following regions:
Canberra & Southern Tablelands | Southern Highlands | South Coast