Route 33 is a state highway in the U.S. state of Rhode Island. It runs approximately 6.8 miles (10.9 km) from Route 3 in Coventry to Route 2 in Cranston.

Route 33 starts at an intersection with Rhode Island Route 3 in Coventry. It runs north and crosses the South Branch Pawtuxet River before turning east to form a concurrency with Rhode Island Route 117. Route 33 splits off to the northeast and continues along the bank of the South Branch Pawtuxet River. It forms a concurrency with Rhode Island Route 115, crosses over the river, leaves Route 115, and then continues north over the Pawtuxet River. Route 33 crosses over I-295 without an interchange, and ends at Rhode Island Route 2 in Cranston. From the split with New London Avenue in Cranston to the Pawtuxet River, Route 33 runs on the Warwick/West Warwick town line. Route 33 northbound runs in Warwick and Route 33 southbound runs in West Warwick.

Most of Route 33, excluding Sandy Bottom Road in Coventry, was an old alignment of Route 3 and Route 1A.

County	Location	mi	km	Destinations	Notes
Kent	Coventry	0.0	0.0	Route 3 (Tiogue Avenue)	Southern terminus
		0.5	0.80	Route 117 west (Main Street)	Southern end of Route 117 concurrency
		0.7	1.1	Route 116 north (Knotty Oak Road)	Southern end of Route 116
		2.1	3.4	Route 117 east (West Warwick Avenue)	Northern end of Route 117 concurrency
	West Warwick	3.1	5.0	Route 115 west (Main Street)	Southern end of Route 115 concurrency
	West Warwick–Warwick line	4.6	7.4	Route 115 east (Toll Gate Road)	Northern end of Route 115 concurrency
Providence	Cranston	6.5	10.5	Route 2 south (Bald Hill Road)	Interchange; northbound exit only
		6.8	10.9	Route 2 north (New London Avenue)	Northern terminus; interchange
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

• 2019 Highway Map, Rhode Island