Jalan Masai Lama
| Johor Route 10 | |
|---|---|
| Major junctions | |
| West end | Tebrau Highway Carrefour Hypermarket Tebrau | 
|  FT 3  AH18 Tebrau Highway  FT 17 Pasir Gudang Highway | |
| East end | Kong Kong | 
| Location | |
| Country | Malaysia | 
| Primary destinations | Johor Bahru, Taman Molek, Taman Johor Jaya, Plentong, Permas Jaya, Bandar Sri Alam, Masai, Pasir Gudang, Kota Masai | 
| Highway system | |
Jalan Masai Lama (Johor state route J10) is a major road in Johor, Malaysia. It is also a main route to Plentong, Masai, Pasir Gudang and Kong Kong.

List of interchanges
| Km | Exit | Interchange | To | Remarks | 
|---|---|---|---|---|
| J10 0 | Tebrau Highway Carrefour Hypermarket Tebrau |  FT 3  AH18  Tebrau Highway North  FT 3  AH18 Kota Tinggi  FT 3  AH18 Mersing  FT 3  AH18 Kota Tinggi waterfall  FT 3  AH18 Desaru  FT 17 Tampoi  FT 17 Skudai  FT 17 Senai  FT 17 Kulai   Second Link Expressway  AH143 Tuas (Singapore)   North–South Expressway Southern Route  AH2 Kuala Lumpur   North–South Expressway Southern Route  AH2 Melaka  FT 17 Bandar Sri Alam  FT 17 Pasir Gudang  FT 17 Johor Port   FT 17 Tanjung Langsat South  FT 3  AH18 Johor Bahru  FT 3  AH18 Woodlands (Singapore) | Half-diamond interchange | |
| Taman Molek | T-junctions | |||
| Taman Molek | North Jalan Rosmerah Utama Taman Johor Jaya South Persiaran Molek Utama Taman Redang Johor Bahru Ponderosa Golf and Country Club | Junctions | ||
| Taman Molek Golf and Country Club | T-junctions | |||
| Tesco Extra Hypermarket Plentong |   Tesco Extra Hypermarket Plentong | T-junctions | ||
| Pasir Gudang Highway |  FT 17 Pasir Gudang Highway West  FT 3  AH18 Kota Tinggi  FT 3  AH18 Mersing  FT 3  AH18 Kota Tinggi waterfall  FT 3  AH18 Desaru  FT 17 Tampoi  FT 17 Skudai  FT 17 Senai  FT 17 Kulai   Second Link Expressway  AH143 Tuas (Singapore)   North–South Expressway Southern Route  AH2 Kuala Lumpur   North–South Expressway Southern Route  AH2 Melaka East  FT 17 Bandar Sri Alam  FT 17 Pasir Gudang  FT 17 Johor Port   FT 17 Tanjung Langsat | Diamond interchange | ||
| MBJB-MPJBT border | ||||
| Giant Hypermarket Plentong |  | |||
| Plentong Giant Hypermarket Plentong | North Jalan Johor Jaya Taman Johor Jaya Desa Tebrau  FT 3  AH18 Kota Tinggi  FT 3  AH18 Mersing  FT 3  AH18 Kota Tinggi waterfall  FT 3  AH18 Desaru | T-junctions | ||
| Sungai Plentong bridge | ||||
| Permas Jaya | South Jalan Permas Utara Permas Jaya   Johor Bahru Eastern Dispersal Link Expressway  AH2 Johor Bahru   Johor Bahru Eastern Dispersal Link Expressway  AH2 Woodlands (Singapore) | T-junctions | ||
| Bandar Sri Alam | ||||
| Bandar Sri Alam | ||||
| Masai | ||||
| Pasir Gudang Barat | South Persiaran Dahlia 2 Pasir Gudang Taman Mawar | T-junctions | ||
| Pasir Gudang Tengah Taman Cendana | South Jalan Masjid Pasir Gudang Taman Cendana Johor Circuit Masjid Jamek Pasir Gudang  Pasir Gudang Recreational Park  Bukit Layang Layang Muzium Layang Layang | T-junctions | ||
| Taman Scientex | Taman Scientex Cahaya Baru | T-junctions | ||
| Pasir Gudang Timur Taman Cendana | Taman Cendana | T-junctions | ||
| Kota Masai | ||||
| Kota Masai | Southeast Jalan Kota Masai  FT 17 Tanjung Langsat  FT 17 Port of Tanjung Langsat  | T-junctions | ||
| Politeknik Johor Bahru | T-junctions | |||
| Taman Scientex | Taman Scientex | T-junctions | ||
| Jalan Takungan Air Sultan Iskandar | North Jalan Takungan Air Sultan Siandar Sultan Iskandar Reservoir Petronas Natural Gas Operation Centre, Pasir Gudang | T-junctions | ||
| Kampung Cahaya Baru | ||||
| Cahaya Baru Estate | ||||
| Cahaya Baru-SDE |   Senai–Desaru Expressway Senai–Desaru Expressway West Senai Senai International Airport .jpg) Singapore Kuala Lumpur Johor Bahru Ulu Tiram East Desaru Bandar Penawar Pengerang | T-junctions | ||
| Kong Kong Estate | ||||
|  J10 0 | Kong Kong | Start/end of road |