Kline met actress Phoebe Cates in 1983.
They began dating in 1985 and married in 1989.
The couple live on the Upper East Side of Manhattan in New York.
They have two children, Owen Kline (born 1991) and Greta Kline (born 1994), who fronts the band Frankie Cosmos.

After his son, Owen, was diagnosed with juvenile diabetes, Kline became active with the Juvenile Diabetes Research Foundation.
In November 2004, he was presented with the JDRF's Humanitarian of the Year award by Meryl Streep for his volunteer efforts on behalf of the organization.

The Kevin Kline Awards honor theatre professionals in St. Louis in an array of categories, which include best actor and actress, set design, choreography, and new play or musical.
Kline met actress Phoebe Cates in 1983. They began dating in 1985 and married in 1989. The couple live on the Upper East Side of Manhattan in New York. They have two children, Owen Kline (born 1991) and Greta Kline (born 1994), who fronts the band Frankie Cosmos.
After his son, Owen, was diagnosed with juvenile diabetes, Kline became active with the Juvenile Diabetes Research Foundation. In November 2004, he was presented with the JDRF's Humanitarian of the Year award by Meryl Streep for his volunteer efforts on behalf of the organization.
The Kevin Kline Awards honor theatre professionals in St. Louis in an array of categories, which include best actor and actress, set design, choreography, and new play or musical.
Kevin Kline