New York State Route 990V (NY 990V) is an east–west reference route in Schoharie County, New York, in the United States. It extends for 6.15 miles (9.90 km) from an intersection with NY 30 in the town of Gilboa to a junction with County Route 18 (CR 18) in the town of Conesville, where the road continues east as CR 3. Reference routes in New York are typically unsigned; however, NY 990V is fully signed with touring route markers. The road is a remnant of New York State Route 342, a route assigned as part of the 1930 renumbering of state highways in New York. The NY 342 designation was removed in the late 1940s; however, its former routing from Gilboa to Conesville remained a state highway and became NY 990V when the modern reference route system in New York was created.