Jena is an Odia surname. People surnamed Jenā mostly belong to the Chasa, Khandayat, Shudra Mahalayak and Pano castes and also the Karan community.
Indian people with the surname include
Bhanu Pratap Jena (born 1955), American cell biologist
Bijaya Jena, Indian actress, film director and producer
Kishore Jena (born 1995), Indian track and field athlete
Mohan Jena (born 1957), Indian politician
Srikant Kumar Jena (born 1950), Indian politician
Surendra Nath Jena, Indian Odissi dancer
Other people
Günter Jena (1933–2026), German choral conductor and musicologist