Sunday Marshall Katung (born 1 April 1961) is a Nigerian politician and lawyer who has served as the Senator Representing Kaduna South Senatorial District since 2023.

[1] Katung was born on 1 April 1961, in Madakiya, defunct Northern Region (now in Zangon Kataf LGA of southern Kaduna State), Nigeria.

He obtained a Post-Graduate Diploma in Management (PGDM) in 2000 and a Master's degree in Business Administration (MBA) from Ahmadu Bello University, Zaria, in 2005.

Among the several courses he attended are course on: Public Enterprise Restructuring at the International Law Institute, Washington DC, United States; Post-privatisation – Managing the Challenge in the same institution; Company Secretaries and Corporate Legal Adviser's Course at the Management School, London, UK; National Seminar on Company Law and Practice and Corporate Administration by AMIT Consultancy services LTD; Negotiation of International Contracts by POTOMAC WORKSHOPS; Legal and Financial Aspects of Pension Scheme and Trust Management by Lord SALISBURY CHAMBERS AND LIBRARY.

[1][2] Katung served as: Katung contested under the party flagship of the PDP in 2015 and got elected as a member of Federal House of Representatives, representing Jaba/Zangon Kataf Federal constituency of Kaduna State.