Alfred Reginald Fremlin (1832 – 14 July 1915) was an English-born Australian politician.
He was born in Wateringbury in Kent to William Fremlin and Elizabeth Morton.
A fellmonger, he married Elizabeth Mennons around 1852; they had twelve children.
He migrated to New South Wales around 1855 and settled in Sydney, working as a fellmonger; he would later become a Baptist minister.
In 1880 he was elected to the New South Wales Legislative Assembly for Redfern.