Line 9 or 9 Line may refer to:
- 9 (New York City Subway service)
- Barcelona Metro line 9, one of the two branches of the Barcelona metro extension line 9/10
- Mexico City Metro Line 9, a rapid transit line in Mexico City
- Line 9, Beijing Subway, a subway line in Beijing, China
- Line 9 (Madrid Metro)
- Line 9 (Naples metro), rapid transit railway line that forms part of the Metropolitana di Napoli
- Paris Métro Line 9, one of 16 metro lines in Paris, France
- Route 9 (Baltimore), a bus route
- Seoul Subway Line 9, a subway line in Seoul
- Line 9, Shanghai Metro, a subway line in Shanghai, China
- Line 9, Tianjin Metro, a subway line in Tianjin, China
Famous quotes containing the word line:
“What we are, that only can we see. All that Adam had, all that Caesar could, you have and can do. Adam called his house, heaven and earth; Caesar called his house, Rome; you perhaps call yours, a cobbler’s trade; a hundred acres of ploughed land; or a scholar’s garret. Yet line for line and point for point, your dominion is as great as theirs, though without fine names. Build, therefore, your own world.”
—Ralph Waldo Emerson (1803–1882)