- The top 10 refineries Asia Pacific ranking is led by Reliance Industries’ 1.24 million bpd Jamnagar complex in Gujarat, India.
- South Korea places three refineries in the top five despite producing almost no domestic crude oil.
- Singapore contributes two entries via ExxonMobil’s Jurong Island site and Shell’s Pulau Bukom refinery.
- China holds four positions in the list, split between state-owned CNPC assets and newer private petrochemical complexes.
- Asia-Pacific now accounts for roughly 40% of global refining capacity, up from a far smaller share two decades ago.
Asia-Pacific processes more crude oil than any other region on earth, and the top 10 refineries Asia Pacific list for 2026 shows why. Combined capacity across these ten sites exceeds 6.5 million barrels per day, concentrated in three countries: India, South Korea, and China. Nine of the ten largest refineries in the world by capacity now sit within this region.
How We Ranked the Top 10 Refineries Asia Pacific
Ranking is based on installed crude distillation unit (CDU) capacity in barrels per day, using 2026 operator and industry-reported figures. Only operational, single-site or fully integrated complexes are included, sourced against operator disclosures and cross-checked with Energy Institute and IEA data where available.
The top 10 refineries Asia Pacific table below lists each site alongside its operator, location, and current installed capacity.
| Rank | Refinery | Location | Operator | Capacity (bpd) |
|---|---|---|---|---|
| 1 | Jamnagar Refinery Complex | Gujarat, India | Reliance Industries | 1,240,000 |
| 2 | Ulsan Refinery | Ulsan, South Korea | SK Energy | 840,000 |
| 3 | Zhejiang (Dayushan Island) Refinery | Zhejiang, China | Zhejiang Petrochemical Corp | 800,000 |
| 4 | Yeosu Refinery | Yeosu, South Korea | GS Caltex | 775,000 |
| 5 | Onsan Refinery | Ulsan, South Korea | S-Oil Corporation | 669,000 |
| 6 | Singapore Refinery, Jurong Island | Jurong Island, Singapore | ExxonMobil | 592,000 |
| 7 | Pulau Bukom Refinery | Pulau Bukom, Singapore | Shell | 458,000 |
| 8 | Changxing Island Refinery | Dalian, China | Hengli Petrochemical | 400,000 |
| 9 | Yulong Petrochemical Complex | Shandong, China | Shandong Yulong Petrochemical | 400,000 |
| 10 | Jieyang Refinery | Guangdong, China | PetroChina / CNPC | 400,000 |
1. Jamnagar Refinery Complex, Gujarat, India
Jamnagar is the largest single-site refining facility on earth, and its 1.24 million bpd capacity puts it well clear of every other Asia-Pacific site. Reliance Industries operates two fully integrated plants at the complex, configured to process everything from light sweet crude to heavy sour grades. The site anchors Reliance’s export-driven downstream strategy and is the reason Jamnagar also tops the global top 10 refineries by capacity ranking, not just the regional one.
2. Ulsan Refinery, Ulsan, South Korea
SK Energy’s Ulsan site runs at 840,000 bpd, making it the largest of South Korea’s three top-tier refineries. The country imports essentially all of its crude yet has built some of the most technically complex, export-oriented refining capacity in Asia. Ulsan’s product slate leans heavily toward high-value distillates and petrochemical feedstock rather than domestic fuel supply alone.
3. Zhejiang (Dayushan Island) Refinery, Zhejiang, China
Zhejiang Petrochemical Corp’s 800,000 bpd complex represents China’s shift toward privately owned refining megaprojects. Unlike the older state-owned refineries further down this list, ZPC was built explicitly around aromatics and chemical feedstock production rather than transportation fuel output. It is one of the newest large-scale sites to enter the Asia-Pacific top tier.
4. Yeosu Refinery, Yeosu, South Korea
GS Caltex operates the 775,000 bpd Yeosu site, the second of South Korea’s three refineries in this list. Yeosu’s product mix is weighted toward export markets across Asia, reflecting the same crude-free, export-driven model that defines the country’s downstream sector. Alongside Ulsan and Onsan, it gives South Korea more top-tier refining capacity than any other non-crude-producing nation in the region.
5. Onsan Refinery, Ulsan, South Korea
S-Oil Corporation’s 669,000 bpd Onsan refinery completes South Korea’s trio in the top five. The site has invested heavily in upgrading units to maximise high-value product yield from imported crude. Its presence alongside Ulsan and Yeosu underlines how concentrated South Korea’s refining capacity has become around a small number of highly complex, export-focused sites.
6. Singapore Refinery, Jurong Island, Singapore
ExxonMobil’s Jurong Island refinery runs at 592,000 bpd and remains one of the anchor assets of Singapore’s integrated refining and petrochemical hub. Singapore has no domestic crude production, relying entirely on its position as a shipping and storage hub to sustain refining throughput. Jurong Island’s scale makes it the largest single refining asset in Southeast Asia.
7. Pulau Bukom Refinery, Pulau Bukom, Singapore
Shell’s 458,000 bpd Pulau Bukom refinery is Singapore’s second entry in the top 10, reinforcing the island’s position as a regional refining and storage hub. The site has operated for over a century and remains central to Shell’s Asia-Pacific supply chain. Its output supports both regional fuel demand and feedstock for downstream petrochemical operations nearby.
8. Changxing Island Refinery, Dalian, China
Hengli Petrochemical’s 400,000 bpd Changxing Island site is another of China’s newer private integrated complexes, built primarily to feed the company’s downstream polyester and petrochemical business. Like Zhejiang Petrochemical, Hengli represents the private-sector model now driving new Chinese refining capacity, in contrast to the older state-owned plants it increasingly outcompetes on efficiency.
9. Yulong Petrochemical Complex, Shandong, China
Shandong Yulong Petrochemical’s 400,000 bpd complex is one of the newest large-scale entrants to this list, part of Beijing’s push to consolidate China’s fragmented “teapot” refining sector into fewer, larger, more efficient facilities. The site’s integration with downstream petrochemical units mirrors the model already established at Zhejiang and Hengli.
10. Jieyang Refinery, Guangdong, China
PetroChina and CNPC’s 400,000 bpd Jieyang refinery rounds out the list. As a state-owned asset, it sits apart from the privately built complexes elsewhere in China’s top-tier capacity, reflecting the split between legacy CNPC/Sinopec sites and the new generation of private integrated refiners now driving most of the country’s capacity growth.
Top 10 Refineries Asia Pacific: What to Watch Next
China’s older, smaller state-owned refineries face phased closures and consolidation as Beijing enforces national emissions caps and pushes capacity toward larger, more efficient sites. Expect the private petrochemical-integrated complexes such as Zhejiang, Hengli, and Yulong to keep gaining share relative to legacy CNPC and Sinopec assets through the rest of 2026. South Korea’s three-refinery cluster is unlikely to be challenged in the near term given the scale of capital already sunk into Ulsan, Yeosu, and Onsan.
Data compiled from operator disclosures and cross-referenced against the International Energy Agency.
Which refinery tops the Asia-Pacific ranking in 2026?
Reliance Industries’ Jamnagar Refinery Complex in Gujarat, India, leads at 1.24 million bpd, making it both the largest refinery in Asia-Pacific and the largest single-site refinery in the world.
What criteria determines the ranking?
Refineries are ranked by installed crude distillation unit (CDU) capacity in barrels per day, using 2026 operator-reported and industry-verified figures.
Why does South Korea have three refineries in the top five despite producing no crude oil?
South Korea imports nearly all of its crude but has built highly complex, export-oriented refining capacity at Ulsan, Yeosu, and Onsan, giving it a disproportionate share of Asia-Pacific’s largest sites.
How does ExxonMobil’s Jurong Island refinery compare to the rest of the list?
At 592,000 bpd, Jurong Island ranks sixth and is the largest single refining asset in Southeast Asia, anchoring Singapore’s position as a regional refining and storage hub.
Could the rankings change significantly in the next few years?
Yes. China’s older state-owned refineries face phased closures under national emissions caps, while newer private complexes like Zhejiang, Hengli, and Yulong are gaining capacity share, which could reshuffle the lower half of this list.