Annette Kingsland Ziegler (born March 6, 1964) is an American jurist serving as chief justice of the Wisconsin Supreme Court since May 2021.

She received a bachelor's degree in business administration and psychology from Hope College in 1986, and a Juris Doctor from Marquette University Law School in 1989.

[citation needed] In 1997, Governor Tommy Thompson appointed Ziegler to the Washington County Circuit Court, in the Branch 2 vacancy created by the death of Judge James B. Schwalbach.

[citation needed] Ziegler faced Madison attorney Linda Clifford in the April 2007 general election, after they were the top two finishers in the February primary.

Following her election, in a 5–1 decision the Wisconsin Supreme Court took the unprecedented step of publicly reprimanding Ziegler for willful violations of the code of judicial conduct by presiding over those cases where she had an apparent conflict of interest.

[6] In 2017, she joined a 5–2 decision to strike down a rule that would have required judges to recuse from cases where they had received lawful campaign contributions from one of the interested parties.

[11] This criticism was the main focus of her vehement dissent in Clarke v. Wisconsin Elections Commission, in which she wrote that the majority (often referred to in the dissent as the "court of four") "takes a wrecking ball to the law, making no room, nor having any need, for longstanding practices, procedures, traditions, the law, or even their co-equal fellow branches of government.