Wyo. Stat. Ann. § 28-9-101
(a) As used in this act:
(i) 'Agency' means any authority, bureau, board, commission, department, division, officer or employee of the state, excluding the state legislature and the judiciary;
(ii) 'Council' means the legislative management council or any committee thereof;
(iii) 'Rule' means the same as defined in W.S. 16-3-101(b)(ix);
(iv) 'This act' means W.S. 28-9-101 through 28-9-109.