Lenka Slezak Serdar (born 21 July 1997) is a Czech-American ice hockey player and member of the Czech national team.

[1][2] Serdar grew up playing ice hockey in and around her home town of Lexington, Massachusetts in the Greater Boston area.

In her senior year of high school, she relocated to the North American Hockey Academy academic campus in Stowe, Vermont and served as alternate captain to NAHA White.

She earned praise from Cornell head coach Doug Derraugh for her versatility, focus, and skill set.

During her time at Cornell, Serdar played alongside many future stars of international and professional women’s ice hockey, including Jaime Bourbonnais, Amy Curlew, Sarah Knee, Taylor Woods, and Micah Zandee-Hart.

Ahead of the 2021–22 season, Serdar signed a two-season contract with Linköping HC of the Swedish Women's Hockey League (SDHL).

Her major tournament debut was the 2021 IIHF Women's World Championship, and she has stated her desire to qualify for and play in the Olympic Games with the Czech national team.