| Station Number | Station Name | Details | Interchange |
| NS1 | Jurong East | The Jurong East MRT Station is an above ground station. This major station is an interchange for the East West Line with the North South Line. It serves as the terminus for the western end of the North South Line. | EW4 |
| NS2 | Bukit Batok | The Bukit Batok MRT Station is an above-ground station. The station also has an outlet of NTUC Fairprice supermarket within its premises. | NONE |
| NS3 | Bukit Gombak | The Bukit Gombak MRT Station is an above-ground station which opened on 10 March, 1990. Originally without platform screen, these were installed at end April 2010 as a security feature. | NONE |
| NS4 | Choa Chu Kang | The Choa Chu Kang MRT station is an above ground station that is also the terminus of the Bukit Panjang LRT. The station opened on 10 February, 1990 to serve the North South Line, and then on 6 November 1999 it became an interchange and terminus for the Bukit Panjang LRT line. | BP1 |
| NS5 | Yew Tee | The Yew Tee MRT Station is an above-ground station opened on 10 February, 1996. It serves the mainly residents of HDB flats in Choa Chu Kang North | NONE |
| NS7 | Kranji | The Kranji MRT Station is an above-ground station opened on 10 February, 1996. It serves the industrial estates of Sungei Kadut as well as the Singapore Turf Club, which causes a rise in traffic on race days. | NONE |
| NS8 | Marsiling | The Marsiling MRT Station is an above-ground station serving the western side of Woodlands New Town. To protect the privacy of the residents there, screens are built along the tracks. | CC9 |
| NS9 | Woodlands | The Woodlands MRT Station is an above-ground Station integrated to the Woodlands Regional Bus Interchange and the Causeway Point Shopping Centre. This station will in future be an interchange with the Thomson MRT Line, still under planning stage. | NONE |
| NS10 | Admiralty | The Admiralty MRT Station is an above-ground station serving the neighbourhood of Admiralty and eastern part of Woodlands New Town. | NONE |
| NS11 | Sembawang | The Sembawang MRT Station is an above-ground station serving the residential neighbourhood of Sembawang. The station is integrated to the Sembawang Bus Interchange, with Sun Plaza Shopping Centre located next to it. | NONE |
| NS13 | Yishun | The Yishun MRT Station is an above-ground station opened in December, 1988. As with the older stations on the North South Line, it was originally built without platform screen doors. These were only installed and started operations on 2 December, 2009. | NONE |
| NS14 | Khatib | The Khatib MRT Station is an above-ground station serving the residents of Yishun New Town. The section between this station and Yio Chu Kang Station is the longest distance between two Singapore MRT stations, that it takes 5 minutes to travel between the two stations. | NONE |
| NS15 | Yio Chu Kang | The Yio Chu Kang MRT Station is an above ground station which serves the neighbouring educational institutions and residential neighbourhoods. | NONE |
| NS16 | Ang Mo Kio | The Ang Mo Kio MRT Station serves the adjacent Ang Mo Kio Town Centre. To cater to heavier traffic, especially during specific public holidays and festivals, additional trains are added to this line, running from Marina Bay to this station. | NONE |
| NS17 | Bishan | The Bishan MRT Station is an underground station originally built for the North South Line, and then integrated with an interchange to the Circle Line on 28 May, 2009. | CC15 |
| NS18 | Braddell | The Braddell MRT Station is an underground station on the northern part of the Toa Payoh neighbourhood. | NONE |
| NS19 | Toa Payoh | The Toa Payoh MRT Station is an underground station that serves the main Toa Payoh area. Completed on 5 August, 1985, it is the first and oldest MRT station in Singapore, and the first in the world with platform screen doors. | NONE |
| NS20 | Novena | The Novena MRT Station is an underground station which opened on 12 December, 1987. | NONE |
| NS21 | Newton | The Newton MRT Station is an underground station along Scotts Road. At a depth on just 12 meters, it is the swallowest underground MRT station thus far. The Newton station will be an interchange in the future with the Downtown Line, which is slated to reach it only around 2015. | DT11 |
| NS22 | Orchard | The Orchard MRT Station is an underground station at Orchard Road. Its strategic location makes it one of the busiest stations. The station has five exits, A, B, C, D, and E. | NONE |
| NS23 | Somerset | The Somerset MRT Station is an underground station on the North South Line. It was named after Somerset Road, which in turn was named after famous novelist W. Somerset Maugham. | NONE |
| NS24 | Dhoby Ghaut | The Dhoby Ghaut MRT Station is an underground station. It first opened on 12 December, 1987, for the North South Line. It became an interchange when the North East Line opened on 20 June, 2003. It is one of two MRT stations with travellators - the other being the Serangoon MRT Station. On 17 April, 2010, the Dhoby Ghaut station links to the Circle Line, becoming the only interchange station in Singapore serving three lines, and the biggest MRT Station in Singapore. The Dhoby Ghaut station is the second deepest station, reaching a depth of 28 meters, equivalent to a five-storey building, and surpassed in depth only by the Bras Basah Station. | |
| NS25 | City Hall | The City Hall MRT Station is one of the two original interchange stations of the MRT network, serving the North-South and East-West lines. It is one of the two stations serving the Central Business District. | EW13 |
| NS26 | Raffles Place | The Raffles Place MRT Station is an underground station beneath the public square of the same name. It is an interchange for the North South Line to the East West Line. Once the biggest and deepest MRT station in Singapore, it relinquished the title to the Dhoby Ghaut station in 2003, when passed it to the Bras Basah station in 2010. | EW14 |
| NS27 | Marina Bay | The Marina Bay MRT Station is an underground station that serves as the southern terminal of the North South Line. The station will serve the New Downtown, an extension of the Central Business District that is presently being developed. The station is also slated to be an interchange for the Circle Line in the future. | CC... |
| NS28 | unnamed | An extension to the North South Line is now under construction. Its working name is Marina Pier, while the actual name has not yet been determined. The station will be located near Marine South Pier, not to Marine Barrage as originally planned. | NONE |
