After just 3½ months of marriage, Tonya Harding has filed for divorce and intends to focus on her skating comeback. Harding filed for divorce in Clackamas (Ore.) County Tuesday, her agent said.

"There are irreconcilable differences between Michael and Tonya," agent David Hans Schmidt said yesterday. "Tonya wishes Michael happiness and success as she hopes he does for her."

Schmidt said Harding wants no distractions as she concentrates on what he has dubbed "Tonya II, The Comeback."

Harding and machinist Michael Smith were married Dec. 23 on a yacht on the Willamette River. It was his fourth marriage and her second.

Meanwhile, a judge has told Harding's attorney that there are no legal barriers that would prevent her from seeking reinstatement to the U.S. Figure Skating Association.