Anton Carl Diderik Dahlberg (born 10 May 1985) is a Swedish sailor, who specializes in the 470 class, a two-person dinghy.

[11] Dahlberg and Östling finished 35th out of 112 in the men's 470 event at the 2007 ISAF Sailing World Championships in Cascais, taking in a bullet in the first race of the opening series.

The Swedish duo finished 15th in a ten-round opening series with a net score of 111, trailing Israelis Gideon Kliger and Udi Gal by a narrow, three-point gap in the final standings.

[13] Dahlberg qualified to compete for the second time as a skipper in the men's 470 class at the Olympics by finishing eleventh and receiving a nation spot at the ISAF World Championships in Perth, Western Australia.

[22] At the 2017 470 World Championships in Thessaloniki, Dahlberg and Bergström were in the lead before the medal race on the last day, ahead of Australian team Mathew Belcher and Will Ryan.

[25] At the 2021 470 World Championships in Vilamoura in March 2021, the Dahlberg and Bergström team won their first World championship title, ahead of Portuguese silver medallists Diogo Costa and Pedro Costa and Spanish bronze-medallist team Jordi Xammar and Nicolás Rodríguez.

[34][35] Dahlberg and Karlsson successfully defended their 470 European Championships title in May 2023 in Sanremo, one point ahead of German crew Anna Markfort and Simon Diesch.