Duane Koslowski (August 16, 1959 – February 2, 2025) was an American wrestler.

He competed in the men's Greco-Roman 130 kg at the 1988 Summer Olympics.

[1] His twin brother, Dennis Koslowski, wrestled with him at Minnesota-Morris and was a two-time Olympic medalist in Greco-Roman wrestling.

Duane Koslowski died on February 2, 2025, at the age of 65.

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