Amalda beachportensis is a species of sea snail, a marine gastropod mollusk in the family Ancillariidae.
Status uncertain.
Amalda beachportensis is 20.5 mm in length and 9.5 mm in width on average.
The triangularyly-oval aperture has a width of 12 mm with a narrow behind. The outer lip is simple and thin with a tooth near its anterior end.
This marine species is endemic to Australia and occurs off South Australia.