Line 6 may refer to:
- Line 6, Beijing Subway, a metro line in Beijing
- Line 6, Chongqing Rail Transit, a metro line in Chongqing
- Line 6, Guangzhou Metro, a metro line in Guangzhou, Guangdong
- Line 6, Kunming Rail Transit, a metro line in Kunming, Yunnan
- Line 6, Shanghai Metro, a metro line in Shanghai
- U6 (Berlin U-Bahn), a metro line in Berlin U-Bahn
- U6 (Frankfurt U-Bahn), a metro line in Frankfurt U-Bahn
- Route 6 (Baltimore), a bus route
- Line 6 (company), a manufacturer of digital modeling guitars, amplifiers and related electronic equipment
|This disambiguation page lists articles associated with the title Line 6.
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