List of Famous people born on January 21st

Masahiro Wada is a former Japanese football player and manager. His sons Atsuki Wada and Tomoki Wada are also footballer.

Admiral of the Fleet Sir Henry Bradwardine Jackson, was a Royal Navy officer. After serving in the Anglo-Zulu War he established an early reputation as a pioneer of ship-to-ship wireless technology. Later he became the first person to achieve ship-to-ship wireless communications and demonstrated continuous communication with another vessel up to three miles away. He went on to be Third Sea Lord and Controller of the Navy, then Director of the Royal Naval War College and subsequently Chief of the Admiralty War Staff. He was advisor on overseas expeditions planning attacks on Germany's colonial possessions at the start of the First World War and was selected as the surprise successor to Admiral Lord Fisher upon the latter's spectacular resignation in May 1915 following the failure of the Gallipoli Campaign. He had a cordial working relationship with First Lord of the Admiralty Arthur Balfour, but largely concerned himself with administrative matters and his prestige suffered when German destroyers appeared in the Channel, as a result of which he was replaced in December 1916.

Paolo Mazzarelli is an Italian actor.

Raivis Belohvoščiks is a Latvian former professional road cyclist who specialized in individual time trial events. He is ten-time Latvian national time trial champion. In 2006 he signed a 2-year contract with UCI ProTour team Saunier Duval–Prodir, but this was not renewed for the 2009 season. In 2010, he rode for Ceramica Flaminia. He didn't achieve any major results in his first Tour de France. He was 40th in the first time trial around Metz. He was one of the major victims of the Passage du Gois in stage 2, and arrived last in stage 6 to Maubeuge. He left the race during the stage (10) to L'Alpe d'Huez.

Adriaen van der Werff was a Dutch painter of portraits and erotic, devotional and mythological scenes. His brother, Pieter van der Werff (1661–1722), was his principal pupil and assistant.

Admiral Henry Wolsey Bayfield was a British naval officer and surveyor.

Raymond Dancel Gary was an American politician who served as the fifteenth Governor of Oklahoma and the first Governor to be born in Oklahoma since statehood.