| 1 | Chinarailwayengineeringcorporation | China | Beijing | 920, Building 1, No. 128 Courtyard, South 4th Ring Road West, Fe | Beijing | 100070 | N/A | 1990 | $160,215,885,873 | 1 | N/A | N/A | 100000000010518 |
| 2 | Al Snafee Trading, General Contrcating, Consutling And Engineering Desgin CO. LTD | Iraq | Basra | Al-jazaer Street | N/A | N/A | N/A | 2009 | $100,384,788,000 | 121 | N/A | N/A | 14042 |
| 3 | Metallurgical CORPORATION Of China LTD. | China | Beijing | Zhongye Building, No.28, Shuguang Xili, Chaoyang District | Beijing | 100028 | N/A | 2008 | $76,188,784,463 | 93,450 | N/A | N/A | 100000000041958 |
| 4 | Metallurgical CORPORATION Of China LTD. | Hongkong | Wan Chai District | Rm 3205 32/f Convention Plz Office Twr | Wan Chai District | N/A | N/A | 2009 | $76,188,784,463 | 170 | N/A | N/A | 50544470 |
| 5 | Accenture LIMITED | Ireland | Dublin | 1 Grand Canal Square Grand Canal Harbour | Dublin | D02P820 | accenture.***** | 2001 | $61,594,305,000 | 693,748 | N/A | N/A | 340745 |
| 6 | China Energy Engineering CORPORATION LIMITED | Hongkong | Causeway Bay | 31/f Times Sq Twr 2 | Wan Chai District | N/A | N/A | 2015 | $60,273,784,583 | 30 | N/A | N/A | 65130185 |
| 7 | Siemens Energy AG | Germany | München | Otto-hahn-ring 6 | München | 81739 | yunextraffic.***** | 2016 | $38,483,308,815 | 98,000 | N/A | N/A | 80333B252581 |
| 8 | Fives Intralogistics Denmark, Filial Af Fives Intralogistics S.P.A, Italien | Denmark | København | Sundkrogsgade 21 | Hovedstaden | 2100 | N/A | 2022 | $29,423,034,319 | 4 | N/A | N/A | 43488163 |
| 9 | China National Chemical Engineering Group CORPORATION LIMITED | Hongkong | North Point | Rm 2308-9 23/f Two Chinachem Exchange Sq | Wan Chai District | N/A | N/A | 1996 | $28,095,839,947 | 24 | N/A | N/A | 20195479 |
| 10 | Barde Company For General Contracting LTD | Iraq | Sulaimanyah | Meer Palace | N/A | N/A | N/A | 2006 | $27,410,275,364 | 46 | N/A | N/A | 272 |
| 11 | China Construction Second Engineering Bureau LTD. | China | Beijing | 251, Beiyangwa, Liyuan Town, Tongzhou District | Beijing | 100000 | N/A | 1980 | $23,282,997,814 | 15,215 | N/A | N/A | 100000000024299 |
| 12 | Hunan Construction Investment Group Co.,ltd. | China | Changsha | Floor 1519, Jiangong New Town Comprehensive Building, Section 1, | Hunan | 410000 | N/A | 2022 | $21,259,175,045 | 280 | N/A | N/A | 430000000128000 |
| 13 | Shaanxi Construction Engineering Group CORPORATION LIMITED | China | Xi'An | No.199, North St., Lianhu District | Shaanxi | 710003 | N/A | 1998 | $20,859,700,159 | 32,283 | N/A | N/A | 610000100042685 |
| 14 | China Communications Services CORPORATION LTD. | China | Beijing | Building 1, No.1 Courtyard, Fenghuangzui Street, Fengtai Distric | Beijing | 100000 | N/A | 2006 | $20,702,564,216 | 76,686 | N/A | N/A | 100000000040483 |
| 15 | Al-Ula Engineering Bureau (mue Group) | Iraq | Baghdad | House No. 33 No 607 Street No. 3 | N/A | N/A | N/A | 1991 | $18,116,563,589 | 5 | N/A | N/A | 8/3145 |
| 16 | Brookfield Infrastructure Partners L.P. | Canada | Toronto | 100-181 Bay St | Ontario | M5J 2T3 | hsdpartners.***** | 2009 | $17,931,000,000 | 24,000 | N/A | N/A | N/A |
| 17 | Cosapi S.A. Agencia En Chile | Chile | Santiago | Av. Los Militares 5953 | Santiago | 7561282 | N/A | 2012 | $17,000,962,000 | 965 | N/A | N/A | 59176960K |
| 18 | Beijing Construction Engineering Group Co.,ltd. | China | Beijing | No. 1, Guanglian Road, Xicheng District | Beijing | 100055 | N/A | 1993 | $16,979,821,185 | 3,250 | N/A | N/A | 110000005019596 |
| 19 | Mattest (ireland) LIMITED | Ireland | Dublin | Unit 2 Northwest Business Park | Dublin | D15 EF1H | mattest.***** | 1976 | $16,943,249,180 | 66,466 | N/A | N/A | 55796 |
| 20 | Hidrotattersall S.A. | Chile | Talagante | Ruta G 40 1446 | Talagante | N/A | N/A | 2015 | $16,560,910,868 | 156 | N/A | N/A | 765177979 |
| 21 | Aecom | USA | Dallas | 13355 Noel Rd Ste 400 | Dallas | 75240 | aecom.***** | 1980 | $16,105,498,000 | 51,000 | N/A | N/A | 886293 |
| 22 | Energy Development Oman | Oman | Muscat | Mina al Fahal | Muscat Governorate | 116 | N/A | 2020 | $16,065,270,000 | 200 | N/A | N/A | 1378556 |
| 23 | China Tiesiju Civil Engineering Group CO., LIMITED | Newzealand | Auckland | U R, 383 Khyber Pass Road | Auckland | 1023 | N/A | 2018 | $15,347,004,575 | 6 | N/A | N/A | 7058535 |
| 24 | Jacobs Engineering Group INC. | USA | Dallas | 1999 Bryan St Ste 3500 | Dallas | 75201 | jacobs.***** | 1947 | $14,922,825,000 | 55,000 | N/A | N/A | 2114321 |
| 25 | Control Y Aplicaciones Mex, S.A. De C.V. | Mexico | Cdmx | Chicontepec No. 5 | Distrito Federal | 53370 | N/A | 1981 | $12,857,937,447 | 1,100 | N/A | N/A | CAM810720PA3 |
| 26 | Surendra Engineering CORPORATION LIMITED | India | Mumbai | 313 Mukat House | Maharashtra | N/A | N/A | 2008 | $12,561,215,771 | 30 | N/A | N/A | AAMCS9067J |
| 27 | Efacec Engenharia E Sistemas, S.A. Denmark, Filial Af Efacec Engenha Ria E Sistemas S.A., | Denmark | København | H.c. Andersens Boulevard 38, Sal 3th | Hovedstaden | 1553 | efacec.***** | 2015 | $12,362,175,950 | 4 | N/A | N/A | 36892234 |
| 28 | China Petroleum Engineering CORPORATION | China | Karamay | No.2, Daqing E. Road, Dushanzi District | Xinjiang | 834000 | N/A | 1999 | $11,858,054,619 | 38,417 | N/A | N/A | 650000040000440 |
| 29 | Denys Burkina Faso SARL | Burkinafaso | Ouagadougou | Rue 9.05 | Centre | N/A | N/A | 2022 | $11,856,348,054 | 80 | N/A | N/A | BF-OUA-01-2022-B |
| 30 | Jacobs Solutions INC. | USA | Dallas | 1999 Bryan St Ste 1200 | Dallas | 75201 | jacobs.***** | 2022 | $11,500,941,000 | 45,000 | N/A | N/A | 03681065 |
| 31 | Zhejiang Construction Investment Group CO.,LTD | China | Hangzhou | No.52, Wensan West Rd., Xihu District | Zhejiang | 310012 | N/A | 2006 | $11,130,154,479 | 18,505 | N/A | N/A | 430000000012070 |
| 32 | Gazstroiprom, AO | Russia | Sankt-peterburg | D. 3 K. 3 Litera B Etazh / Kom. 22/22, Ul. Tashkentskaya | Sankt-peterburg | 196006 | N/A | 2018 | $10,879,799,778 | 896 | N/A | N/A | 29749701 |
| 33 | Cimic Group LIMITED | Australia | Sydney | L 25 177 Pacific Hwy | New South Wales | 2060 | cimic.***** | 1960 | $10,877,492,221 | 40,234 | N/A | N/A | 004482982 |
| 34 | Siemens Rail Automation PTY. LTD. | Hongkong | Kwun Tong District | 10/f Manulife Financial Ctr Twr B | Kwun Tong District | N/A | N/A | 2002 | $10,251,721,000 | 25 | N/A | N/A | 32539384 |
| 35 | Electrical Technology Design INC | Guam | Tumon | 669a Marine Corps Drive | N/A | N/A | N/A | N/A | $8,284,043,658 | 85,503 | N/A | N/A | N/A |
| 36 | Engie Italia SPA | Italy | Milano | Viale Fulvio Testi 280 | Milano | 20126 | gdfsuez.***** | 2000 | $7,931,959,771 | 671 | N/A | N/A | IT06289781004 |
| 37 | Mtr CORPORATION LIMITED | Unitedkingdom | Rugby | Suite 5 Eleven Arches House | Warwickshire | CV21 1FD | N/A | 2003 | $7,712,673,731 | 18 | N/A | N/A | FC024806 |
| 38 | Worley LIMITED | Australia | Sydney | L 19 420 George St | New South Wales | 2000 | worley.***** | 2001 | $7,289,576,719 | 49,700 | N/A | N/A | 096090158 |
| 39 | Samsung E&A CO., LTD. | Southkorea | Seoul | 26 Sangil-ro 6-gil, Gangdong-gu | Seoul | 05288 | N/A | 1978 | $7,155,983,618 | 5,519 | N/A | N/A | 1208156184 |
| 40 | Groupe Atkinsrealis INC | Canada | Montréal | 455 Boul Rene-levesque Ouest | Québec | H2Z 1Z3 | snclavalin.***** | 1967 | $6,891,666,191 | 46,490 | N/A | N/A | 0590410 |
| 41 | Seatrium LIMITED | Singapore | Singapore | 80 Tuas South Boulevard | Singapore | 637051 | N/A | 1963 | $6,889,528,282 | 23,000 | N/A | N/A | 196300098Z |
| 42 | Downer Edi LIMITED | Australia | Sydney | 39 Delhi Rd | New South Wales | 2113 | downergroup.***** | 1989 | $6,801,896,055 | 3,500 | N/A | N/A | 003872848 |
| 43 | D Y Uppar | India | Bengaluru | No 148/6-1, 5th Cross Rmv Extension | Karnataka | 560080 | N/A | 1970 | $6,743,740,545 | 1 | N/A | N/A | GBGLB1091819000 |
| 44 | Sk Engineering & Construction Company LIMITED Turkiye Irtibat Burosu | Turkey | İstanbul | Kat: 21, No: 79 Beybi Giz Plaza | İstanbul | 34398 | N/A | N/A | $6,694,243,824 | 0 | N/A | N/A | 7720633353 |
| 45 | Zhejiang Communications Technology Co.,ltd. | China | Hangzhou | No. 598 Qianwu Road, Qingshanhu Science and Technology City, Lin | Zhejiang | 311305 | N/A | 1998 | $6,593,348,400 | 7,955 | N/A | N/A | 330000000002425 |
| 46 | Apex Engineering Services | India | Nashik | 212, Kharbanda Park, Opp.dwarka Hotel | Maharashtra | 422001 | N/A | 1998 | $6,540,740,653 | 50 | N/A | N/A | 27950001705V |
| 47 | Beijing New Building Material (group) Co.,ltd. | China | Beijing | No. 1001, 10th Floor, 4th Floor, No. 9 Shouti South Road, Haidia | Beijing | 100048 | N/A | 1984 | $6,519,562,856 | 118 | N/A | N/A | 110000004243860 |
| 48 | Sinoma International Engineering Co.,ltd. | China | Beijing | Zhongcai International Building, No.16, Wangjing N. Road, Chaoya | Beijing | 100102 | N/A | 2001 | $6,366,353,772 | 15,598 | N/A | N/A | 100000000036149 |
| 49 | Holyman PTY LIMITED | Australia | Sydney | Oracle Plza, L 13, 181 Miller Street | New South Wales | 2060 | N/A | 1993 | $6,236,159,370 | 47,000 | N/A | N/A | 062572034 |
| 50 | Babcock International Group PLC | Unitedkingdom | Marylebone | 33 Wigmore Street | London | W1U 1QX | babcock.***** | 1989 | $6,111,522,031 | 26,858 | N/A | N/A | 02342138 |