Letitia "Tish" Baldrige (February 9, 1926 – October 29, 2012) was an American etiquette expert, public relations executive and author who was most famous for serving as Jacqueline Kennedy's Social Secretary.

[3] After three years she was appointed secretary in Rome to the American ambassador to Italy, Clare Boothe Luce, followed by a position as director of public relations for the jeweller Tiffany & Co.[1] Although then a registered Republican, in 1960 she was invited to work for the Kennedy campaign in Massachusetts once he secured the Democratic presidential nomination, going on to work officially for the First Lady after his victory.

[1] Baldridge served in the post of White House Social Secretary, coordinating aspects of the Inauguration, receptions, and state dinners.

In 1964, the year after marrying real estate developer Robert Hollensteiner, whom she met while working for a Kennedy family firm, she founded her own PR business, Letitia Baldrige Enterprises, Chicago.

[1] Earning the nickname the "Doyenne of Decorum" with a newspaper column and a string of successful books, in 1978 she appeared on the November 28th cover of Time.