Ratneshwar Lal Kayastha (born 3 May 1944) is a Nepalese politician and former Governor of Province No.

[5][6][7] Earlier, he was the Secretary at Ministry of Agriculture and Director General at Department of Irrigation, Nepal.

Kayastha began his political career with Federal Socialist Forum, Nepal in the 2004.

[9] He was passed School Leaving Certificate (SLC) in 1st division from Laxmi Chand Murarka Higher Secondary School in Jaleshwar and earned an Intermediates degree with Science from Tri-Chandra College, Kathmandu.

[9] Kayastha joined Civil services of Nepal as an Engineer in 1964.