Knud Arne Petersen (5 August 1862 – 27 June 1943) was a Danish architect and director of Tivoli Gardens in Copenhagen from 1899 to 1940.

Apart from his engagement with Tivoli Gardens, where he created several prominent buildings, including the Chinese Tower and the Nimb complex, he was most active as an exhibition architect, representing Denmark at several World Fairs.

[1] He attended the Royal Danish Academy of Fine Arts from 1878 to 1885 and then worked as an assistant for the architects Vilhelm Petersen, his uncle, and Martin Nyrop.

Petersen's significantly contributed to the Nordic Exhibition of 1888 where he first held an administrative position as Industriforeningen manager, but later as its resident architect until 1927.

[2] In his work with the large exhibitions of the time, Petersen frequently collaborated with Tivoli Gardens and in 1899 was appointed as the amusement park's new artistic director, a position he held until 1940.