Harald Nielsen (20 July 1892 - 22 December 1977) was a Danish designer of silver for Georg Jensen.
The younger brother of Georg Jensen's third wife, he joined the company at 17 as a chaser's apprentice but later became one of the company's leading designers in the 1920s and 1930s and Jensen's closest colleague, One of his most well-known designs being the pyramid flatware pattern.
In the early 1950s he headed the company's apprentice school and in 1958 its artistic director.