The biggest trucking companies in the US are names most drivers rarely see on a trailer. Ask ten people to name a carrier and you'll hear UPS, FedEx, maybe J.B. Hunt, but the trucks hauling day-to-day freight often belong to fleets you've never heard of. Depending on whether you rank by revenue, fleet size, or freight segment, the order changes completely.

This list is updated September 2026 with FY2025 revenue from the Transport Topics Top 100. Here's who's actually on top, and why it depends on how you measure.

Top 20 biggest trucking companies in the US at a glance

The table below ranks the 20 biggest trucking companies in the US by FY2025 revenue, with tractor count and freight focus. Source: Transport Topics 2026 Top 100 For-Hire Carriers, published June 2026 from carrier filings and SEC annual reports.

For the vocabulary behind these categories, see 30 trucking terms every carrier should know. So what for carriers: revenue rank rewards parcel and non-trucking volume, so it flatters UPS and FedEx over pure over-the-road fleets.

What counts as one of the biggest trucking companies?

A "biggest trucking company" is a carrier ranked at the top of the US industry by annual freight revenue, for-hire tractor count, or freight segment share. There's no single official list, which is why the same brand can be number one by one measure and mid-pack by another.

Revenue is the default yardstick because it works across sectors, but UPS and FedEx top the list largely on parcel volume, not over-the-road trucking. Fleet size and segment share give a truer picture of pure trucking scale.

Largest trucking companies in the USA by fleet size

Ranked by for-hire tractors reported to Transport Topics, the order shifts:

• UPS, 125,000 tractors

• Knight-Swift, 26,187 tractors

• FedEx Corp., 22,978 tractors

• J.B. Hunt, 21,448 tractors

• TFI International, 19,121 tractors

The FedEx Freight spin-off reshuffled the fleet picture: FedEx Corp. now reports 22,978 tractors without the LTL trucks that moved to the standalone company. So what for carriers: fleet size alone does not set the margin, mix does, which is exactly why profit per truck beats headline fleet count.

Largest LTL carriers among the top trucking companies in the US

FedEx Freight is the largest LTL carrier in the US at $8.68B in FY2025 revenue, ahead of Old Dominion ($5.50B), Estes ($4.99B est), XPO ($4.83B), R+L Carriers ($3.73B est) and Saia ($3.23B), per the Transport Topics 2026 Top LTL Carriers list.

The biggest structural change of 2026 was the FedEx Freight spin-off, which completed on June 1, 2026 and made it a standalone public company. Combined with Yellow Corp.'s 2023 collapse, LTL capacity has consolidated into fewer national networks. So what for carriers: a smaller LTL player now competes on lane density, not headline rate.

Largest truckload (TL) trucking companies

Knight-Swift is the largest US truckload carrier, running 26,187 tractors on $7.47B in revenue, and it tops the Transport Topics Top Truckload/Dedicated Carriers ranking. The core TL field includes J.B. Hunt, Schneider, Werner Enterprises, and Prime Inc. (the largest refrigerated fleet).

Landstar is a special case: a non-asset owner-operator model with 8,514 tractors run by independent capacity owners, a live example of scaling from owner-operator to fleet. So what for carriers: no single TL carrier holds even 1% of the fragmented truckload market, so scale here buys network reach, not pricing power.

What the biggest trucking companies do differently

These carriers win on operational density, not just size. The clearest lever is dedicated contracts: they lock in freight so trucks stay loaded on known lanes, turning raw fleet count into paid miles. Density lowers cost per mile and contracts remove the volatility that idles equipment, the same discipline that shows up in US trucking market statistics year after year.

How a growing fleet closes the gap on the top trucking companies

Most US carriers run 10 or fewer trucks, and those are exactly the fleets that cannot absorb back-office cost the way a national network can. The good news: the two levers that make the biggest trucking companies efficient scale down.

The first is booking loads faster so trucks stay moving. This is where AI-native software earns its keep, an AI Dispatcher that covers lanes in seconds. The second is running settlement, tracking, and profit reporting in one place, which is what a modern carrier TMS does. That combination is how Ray Cargo scaled from 50 to 350+ trucks on Datatruck.

FAQ

What are the largest trucking companies in the US?

By FY2025 revenue the top are UPS ($88.66B), FedEx Corp. ($79.68B), and J.B. Hunt ($12.00B), per the Transport Topics 2026 Top 100. UPS and FedEx are primarily parcel carriers; the largest pure truckload carrier is Knight-Swift and the largest LTL carrier is FedEx Freight.

What is the biggest trucking company in the USA?

UPS is the largest by both revenue ($88.66B FY2025) and tractor count (125,000). FedEx Corp. is second by revenue at $79.68B after spinning off FedEx Freight on June 1, 2026.

Who is the largest LTL carrier in the US?

FedEx Freight, at $8.68B in FY2025 revenue, is the largest LTL carrier. It became a standalone public company on June 1, 2026, with Old Dominion ($5.50B) second and Estes ($4.99B est) third.

How big is the US trucking industry?

Trucking is the dominant freight mode in the US, moving the large majority of domestic tonnage across roughly 580,000 active carriers, most of which run 10 or fewer trucks. The American Trucking Associations tracks industry tonnage and revenue at trucking.org.