"Leider" (German for Unfortunately) is a song by German Neue Deutsche Härte band Eisbrecher and the first single from their album Antikörper. On 22 August 2006, a double-single titled "Leider/Vergissmeinnicht" was released in the US. It combines both of Eisbrecher singles from their second album.

1. "Leider" – 4:09
2. "Leider (Noel Pix Klingenklang-Mix)" – 4:40
3. "Leider (The Retrosic-Mix)" – 4:57
4. "Willkommen im Nichts" (Multimedia track)