Eric Oscar Sigvard Ny (15 October 1909 – 2 September 1945) was a Swedish middle-distance runner.

He competed in the 1500 m event at the 1932 and 1936 Summer Olympics and finished in fifth and eleventh place, respectively.

He placed fourth in the 800 m at the 1934 European Championships.

Ny died in a sailing accident, aged 35.

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