Highway 140 (AR 140, Ark. 140, and Hwy. 140) is a designation for two east–west state highways in the Upper Arkansas Delta. One route of about 32.70 miles (52.63 km) begins at Highway 14 in Marked Tree and runs east to US 61 in Osceola. A second segment of 1.93 miles (3.11 km) in east Osceola runs from US 61 to Pearl Street and Quinn Avenue. Both routes are maintained by the Arkansas State Highway and Transportation Department (AHTD).

AR 140 begins at US 63B in Marked Tree. It runs north with AR 14 until Lepanto, where the route crosses AR 135. AR 140 then heads northeast, briefly concurring with AR 136 and AR 181 individually before crossing under Interstate 55.

The route continues east to Osceola, meeting US 61.

A separate section begins in Osceola and runs north to US 61 near the city limits.

This section does not cite any sources. Please help improve this section by adding citations to reliable sources. Unsourced material may be challenged and removed. (January 2024) (Learn how and when to remove this message)

Present-day Highway 140 was created on April 1, 1926 as State Road 40, one of the original Arkansas state highways. On November 25, 1958, the route was renumbered to Highway 140 after the American Association of State Highway Officials (AASHTO) designated Interstate 40 in Arkansas.

The original Highway 140 was created between March 1930 and June 1931 from US 65 in Dumas westward to Garrett Bridge. This route became part of AR 54 in 1937.

County	Location	mi	km	Destinations	Notes
Poinsett	Marked Tree	0.00	0.00	AR 149 south / AR 75 south	Western terminus, northern terminus of AR 75
		0.13	0.21	AR 308B east (Broadway Street)
	Lepanto	9.90	15.93	AR 135 – Caraway, Black Oak, Lepanto Business District, Lepanto Museum
		10.15	16.33	AR 14 east – Wilson
	​	13.17	21.20	AR 198 east
Mississippi	​	14.23	22.90	AR 136 west to AR 135	West end of AR 136 overlap
	West Ridge	16.34	26.30	AR 297 north
	Etowah	17.46	28.10	AR 136 east – Etowah	East end of AR 136 overlap
		18.62	29.97	AR 77 south – Bondsville	West end of AR 77 overlap
	Athelstan	21.63	34.81	AR 77 north – Manila	East end of AR 77 overlap
	​	26.05	41.92	AR 181 south – Keiser	West end of AR 181 overlap
	​	27.51	44.27	AR 181 north to AR 18	East end of AR 181 overlap
	Osceola	28.71	46.20	I-55 – Blytheville, Memphis	I-55 exit 48
		30.60	49.25	AR 119Y (Country Club Road) – Victoria
		32.70	52.63	US 61 / Great River Road – Osceola River Port	Eastern terminus
		Gap in route
		0.00	0.00	North Pearl Street / Quinn Avenue	Southern terminus
		1.93	3.11	US 61 / Great River Road	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus

• List of state highways in Arkansas

Media related to Arkansas Highway 140 at Wikimedia Commons