Siebel (disambiguation)

Siebel may refer to:

Companies

 * Siebel, a German aircraft manufacturer founded in 1937 in Halle an der Saale
 * Siebel Systems, a software company principally engaged in the design, development, marketing and support of customer relationship management (CRM) applications.

People

 * Fritz Siebel (1913 – 1991), an Austrian American illustrator
 * Jennifer Siebel Newsom (born 1974), an American documentary filmmaker and First Lady of California since 2019
 * Pablo Siebel (born 1954), a Chilean painter
 * Paul Siebel (born 1937), an American singer-songwriter and guitarist
 * Thomas Siebel, a business executive
 * Wigand Siebel (born 1929), a German sociologist
 * a character in the opera Faust

Siebels may refer to:
 * George G. Siebels, Jr. (born 1913), the first Republican Mayor of Birmingham, Alabama
 * Jon Siebels, (born 1979), the guitarist in the band Eve 6