Nikolaus (Anton) Graf Szécsen von Temerin (Hungarian: gróf temerini Szécsen Miklós) (26 November 1857 – 18 May 1926), was an Austro-Hungarian diplomat of Hungarian origin serving as ambassador at Paris at the outbreak of World War I.

Count Szécsen joined the Austro-Hungarian foreign service and served inter alia in Rome.

[1] At the insistence of Count Tisza, he was appointed despite his relatively limited experience to serve as the Dual Monarchy's ambassador to the Holy See in November 1901, a prominent posting given the close connections between the House of Habsburg and the papacy.

[2] Count Szécsen, considered an able diplomat with a "solid, practical mind and a masterful grasp of the workings of diplomacy",[3] apparently turned down an offer to succeed Count von Aehrenthal as ambassador to St. Petersburg upon the latter's appointment as Minister of Foreign Affairs in 1906.

[4] In early January 1911, Count Szécsen was appointed as ambassador to France, considered one of the most prestigious ambassadorships at the time, and presented his credentials on 21 March.