Top 75 Engineering Firms for 2021

Kimley-Horn, WSP, Terracon, Tetra Tech, and Langan head the rankings of the nation's largest engineering firms for nonresidential buildings and multifamily buildings work, as reported in Building Design+Construction's 2021 Giants 400 Report.

Top 75 Engineering Firms for 2021
	FIRM	2020 REVENUE
1	Kimley-Horn	$568,704,813
2	WSP USA	$427,524,789
3	Terracon Consultants*	$333,200,000
4	Tetra Tech High Performance Buildings Group	$275,271,866
5	Langan	$265,000,000
6	IMEG Corp.	$224,013,000
7	Arup	$201,742,315
8	KPFF Consulting Engineers	$196,364,000
9	Jensen Hughes	$168,616,860
10	Affiliated Engineers Inc.	$158,545,000
11	Henderson Engineers	$127,760,939
12	Walter P Moore	$123,338,091
13	Syska Hennessy Group	$119,163,759
14	Fluor Corp.	$99,440,000
15	Vanderweil Engineers	$96,610,100
16	Pennoni*	$94,656,000
17	M.C. Dean	$77,787,370
18	ESD	$71,584,764
19	TLC Engineering Solutions	$69,643,721
20	CMTA	$67,150,322
21	Jaros, Baum & Bolles	$64,580,081
22	AKF Group	$63,400,000
23	RMF Engineering	$60,000,000
24	ME Engineers	$57,550,000
25	DeSimone Consulting Engineers	$54,127,073
26	Magnusson Klemencic Associates	$53,738,949
27	Arora Engineers	$47,395,349
28	I.C. Thomasson Associates	$45,814,885
29	Smith Seckman Reid	$45,007,506
30	P2S	$44,272,937
31	Martin/Martin Consulting Engineers	$40,285,857
32	HEAPY	$38,881,623
33	Mazzetti	$38,158,927
34	Bala Consulting Engineers	$36,900,000
35	Newcomb & Boyd	$36,121,754
36	HPE Data Center Technologies Services (Facilities Consulting)	$33,700,000
37	Osborn Engineering	$32,744,000
38	raSmith	$30,600,000
39	M/E Engineering	$28,465,000
40	ThermalTech Engineering	$25,477,000
41	Wallace Design Collective	$24,700,000
42	Dunham Associates	$24,670,000
43	H.F. Lenz	$24,111,000
44	TEECOM	$23,196,162
45	LBYD	$22,396,139
46	French & Parrello Associates	$22,196,623
47	KCI Technologies	$20,063,200
48	Spectrum Engineers	$19,627,296
49	Bridgers & Paxton Consulting Engineers	$19,148,968
50	Specialized Engineering Solutions	$17,257,550
51	Swanson Rink	$17,165,115
52	EYP Mission Critical Facilities	$16,700,000
53	Peter Basso Associates	$14,900,000
54	Schaefer	$13,941,058
55	Karpinski Engineering	$13,200,500
56	Kohrs Lonnemann Heil Engineers	$12,915,464
57	PBS Engineers	$12,203,000
58	McKinstry	$12,000,000
59	RMH Group, The	$11,562,362
60	JQ Engineering	$11,316,761
61	Kohler Ronan	$10,685,797
62	Allen + Shariff	$9,459,083
63	OLA Consulting Engineers	$9,167,477
64	Tighe & Bond	$8,540,000
65	MHP Structural Engineers	$7,137,443
66	TAS Energy	$7,125,000
67	G2 Consulting Group	$6,930,000
68	DHE Engineering	$6,919,756
69	Architectural Engineers	$6,907,886
70	SSC Engineering	$6,734,533
71	Paradigm Structural Engineers	$6,569,792
72	Wick Fisher White	$6,271,000
73	KCL Engineering	$5,083,849
74	JP Harvey Engineering Solutions	$4,906,928
75	New York Engineers	$3,426,500
76	JALRW Engineering Group	$2,900,000
77	Weitz Company, The	$1,738,500
78	Structured Engineering Solutions	$1,400,000
79	Marque Engineering	$1,375,822