Line 8 (Mumbai Metro)
{{Short description|Rapid transit line in Mumbai}}
{{Use dmy dates|date=June 2022}}
{{Use Indian English|date=June 2022}}
{{Infobox rail line
| box_width =
| name = File:MMRDA logo cropped.svg Mumbai Metro Line 8
| other_name = Gold Line
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| color = {{rcr|Mumbai Metro|8}}
| logo =
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| image = Maha Mumbai Metro.png
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| type = Airport Express Train
| system = Mumbai Metro
| status = Approved by the State Government
| locale = Mumbai, Maharashtra, India
| start = CSMIA T2
| end = NMIA
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| character = Elevated
| depot =
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| linelength_km = 35
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| map_state = uncollapsed
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Line 8 or the Gold Line is a proposed line of the Mumbai Metro. It would run from Chhatrapati Shivaji Maharaj International Airport to the under construction Navi Mumbai International Airport.{{Cite news |date=2018-03-30 |title=Mumbai’s airport Metro will have a train every 15 minutes |url=https://www.hindustantimes.com/mumbai-news/mumbai-s-airport-metro-will-have-a-train-every-15-minutes/story-Nh3JrKnUhM6jrzPiCvezoN.html |archive-url=http://web.archive.org/web/20240624034002/https://www.hindustantimes.com/mumbai-news/mumbai-s-airport-metro-will-have-a-train-every-15-minutes/story-Nh3JrKnUhM6jrzPiCvezoN.html |archive-date=2024-06-24 |access-date=2024-12-27 |work=Hindustan Times |language=en-us}}{{Cite news |date=2024-12-13 |title=Gold Line Metro: Maharashtra govt to finalise executing agency for Rs 15,000 crore corridor linking Mumbai, Navi Mumbai airports |url=https://timesofindia.indiatimes.com/city/mumbai/metro-8-project-awaits-decision-on-executing-agency-after-poll-break/articleshow/116258897.cms |access-date=2024-12-27 |work=The Times of India |issn=0971-8257}} The {{Convert|35|km|mi|adj=on}} line would be fully elevated and cost {{Currency|150 billion|INR}}. The proposed line would have a frequency of 15 minutes and five or six stations, a relatively low density.
It has been approved by the Government of Maharashtra, and the Detailed Project Report will be made by CIDCO. It is to be developed in a Public-Private Partnership (PPP) model, similar to Mumbai Metro Line 1.{{Cite news |date=2025-01-28 |title=Metro Line 8 approved: Seamless Chhatrapati Shivaji Maharaj International Airport (CSMIA) to Navi Mumbai International Airport (NMIA) connectivity; all you need to know |url=https://timesofindia.indiatimes.com/city/mumbai/metro-8-linking-two-airports-to-be-built-under-ppp-model/articleshow/117610868.cms |access-date=2025-03-02 |work=The Times of India |issn=0971-8257}}