Robb Allen Nen (born November 28, 1969) is an American former Major League Baseball right-handed relief pitcher.

He currently works in the Giants' front office as a special assistant to General Manager Farhan Zaidi.

[1] He attended Los Alamitos High School and played varsity baseball with future Giants Gold Glove-winning first baseman J. T. Snow.

On July 17 of his first year, the Rangers traded Nen and pitcher Kurt Miller to the Florida Marlins for Cris Carpenter.

On November 18, 1997, Nen was traded to the Giants for Mike Villano, Joe Fontenot and Mick Pageler.

After two more runners reached base safely in the eighth, Nen came in to relieve Tim Worrell and try to protect what was now a shaky one-run Giants lead.

Nen pitched with full awareness that he was likely jeopardizing his career and remains admired by Giants' fans for his self-sacrifice.

When his contract with the Giants ended after the 2004 season, Nen filed for free agency but was not picked up by any team.

Nen joined the Giants' baseball operations department as an instructor on both the major and minor league levels, while also advising general manager Brian Sabean on an as-needed basis.

In a ceremony before their July 9, 2005, game against the St. Louis Cardinals, the Giants honored Nen with a plaque commemorating his 300th career save.

The plaque is now located on the public walkway behind the right-field wall of Oracle Park, not far from McCovey Cove.