John I of Luxembourg (French: Jean Ier de Luxembourg; died: 17 May 1364), was a Lord of Ligny, Beauvoir, Roussy and La Roche from the House of Luxembourg.
He was a son of Lord Waleran II and his wife, Guyotte of Lille.
He was a 3rd generation descendant of Henry V, Count of Luxembourg.
Around 1330 he married Alix of Dampierre (d. 1346), the heiress of Guy of Dampierre-Richebourg.
Their children were: