Christine Marie Nairn (born September 25, 1990) is an American retired soccer player from Annapolis, Maryland.

She previously played for the Houston Dash, Orlando Pride, Washington Spirit, and Seattle Reign FC in the United States National Women's Soccer League (NWSL) and had regular loan spells with Melbourne Victory in the Australian W-League.

In 2008, she helped the under-20 national team win gold at the 2008 FIFA U-20 Women's World Cup in Chile.

[5][6] Nairn started playing soccer when she was just four years old competing against her older brothers, Kevin and TJ, in her back yard.

[5] In January 2008, during her senior year in high school, Nairn was called up to the United States women's national soccer team and was the youngest member to attend training camp.

She scored the second-fastest goal in Penn State history, a strike 63 seconds into the match at the University of Connecticut on September 5.

She was named team MVP and to the Eastern College Athletic Conference (ECAC) First-Team All-Star squad.

She garnered All-Big Ten and NSCAA All-Great Lake First Team honors for a third straight year.

Nairn provided the assist on Penn State's lone goal in the Big Ten Final against Illinois and scored a dramatic 85th-minute game-winner against Army in the NCAA First Round.

[5] As a senior in 2012, Nairn earned her first ever Big Ten Midfielder of the Year and first team NSCAA All-American honor.

[8] In 2013, Nairn was one of three finalists for the Hermann Trophy coming in second to University of North Carolina midfielder and future Washington Spirit teammate, Crystal Dunn.

[15][16] On her signing, Nairn said, "It's a great opportunity, like I said before, to represent Seattle and where I've come from – Penn State, and all the teams I played for before.

"[17] Nairn scored the first regular season goal for the Reign during the team's first league match against Chicago Red Stars on April 14, 2013, with a diving header on a cross from forward, Liz Bogus.

[20] On November 20, 2013, the Seattle Reign traded Nairn to the Washington Spirit for the discovery rights to Scottish international Kim Little.

Nairn's most memorable assist of the season came in the semifinal on Francisca Ordega's game-winning goal to send the Spirit to the NWSL Championship.

[24] Nairn joined the Orlando Pride alongside Carson Pickett, in a deal that sent Steph Catley to Seattle.

[26] On February 26, 2019, Orlando Pride traded Nairn to the Houston Dash for exchange for an international slot and draft picks.

She retired from professional soccer on September 18, 2021, after a friendly match against Tigres UANL[4] to become a firefighter with the Houston Fire Department.

"Nairn married United States women's national soccer team and Houston Dash goalkeeper Jane Campbell in December 2023.