Jack Layton

Jack Lemmon

Jack Levine

Jack Lew

Jack London

Jack Lord

Jack Lowden

Jack Lynch

Jack Ma

Born: September 10, 1964

Jack Ma, or Ma Yun, is a Chinese business magnate, investor, politician and philanthropist. He is the co-founder and former executive chairman of Alibaba Group, a multinational technology conglomerate. Ma is a strong proponent of an open and market-driven economy.

Jack Markell

Jack McBrayer

Jack McCollough

Jack McDevitt

Jack Miller

Jack Nance

Jack Nicholson

Jack Nicklaus

Jack O'Brien

Jack O'Connell

Jack Osbourne

Jack Paar

Jack Palance

Jack Prelutsky

Jack Quaid

Jack Ramsay

Jack Reed

Jack Reynor

Jack Rodwell

Jack Scalia

Jack Schlossberg

Jack Schmitt

Jack Schwartz

Jack Steinberger

Jack Straw

Jack Thorne

Jack Valenti

Jack Vance

Jack W. Szostak

Jack Wagner

Jack Welch

Born: November 19, 1935

John Francis "Jack" Welch Jr. is an American business executive, author, and chemical engineer. He was chairman and CEO of General Electric between 1981 and 2001. During his tenure at GE, the company's value rose 4,000%. In 2006, Welch's net worth was estimated at $720 million.

Jack White

Jack Whitehall

Jack Whittaker

Jack Wild

Jack Williamson

Jack Wilshere

Jack Youngblood

Jack Zipes

Jackee Harry

Jacki Weaver