Eken 9, Heritage house in Stockholm, Sweden

The Rettigska huset at Villagatan 3 in Stockholm's Villastaden was designed in a classicising style by the architect brothers Hjalmar and Axel Kumlien and built in 1878–1879. The palace-like residence was bought by Anna Retzius, daughter of Aftonbladet founder Lars Johan Hierta, and passed to the Rettig family in 1899.

The palace-like residence was designed in a classicising style by the architect brothers Hjalmar and Axel Kumlien and built in 1878–1879. It was bought by Anna Retzius, daughter of Aftonbladet founder Lars Johan Hierta, and passed to the Rettig family in 1899. Through Herbert Rettig's donation it became the home of the Royal Swedish Academy of Letters, History and Antiquities, which held its first meeting there on 4 September 1973.

Since 1973 the house has been the seat of the Royal Swedish Academy of Letters, History and Antiquities, which held its first meeting there on 4 September 1973. The building came to the academy through the Rettig donation of Herbert Rettig, who died in 1962, and his wife.

The building at Villagatan 3 is the seat of Kungliga Vitterhetsakademien, which has held its meetings there since 4 September 1973. It is not a public museum, so visits are not part of its regular use; the classicising facade by Hjalmar and Axel Kumlien can be seen from the street in Villastaden.

The building is not to be confused with the Rettigska palatset in Turku or the one in Gävle. It takes its name from the Rettig family, who acquired it in 1899, and since 1962 the Rettig donation has made it the home of the Kungliga Vitterhetsakademien, which held its first meeting in its own house on 4 September 1973.