Wyo. Stat. » Wyo. Stat. / Title 06 - Crimes and Offenses / Chapter 2 - OFFENSES AGAINST THE PERSON / Article 1 - HOMICIDE
Wyoming Statutes

Wyo. Stat. § 6-2-105 (2026)

Manslaughter; penalty.

✓ current as of May 2026
Find cases: SyfertCases citing this section WY-LEGwyoleg.gov JustiaTitle on Justia CornellLII Search CasesGoogle Scholar 
(a) A person is guilty of manslaughter if he unlawfully
kills any human being without malice, expressed or implied,
either:
          (i)   Voluntarily, upon a sudden heat of passion; or

          (ii) Involuntarily, but recklessly except under
circumstances constituting a violation of W.S. 6-2-106(b).

     (b) Except as provided in W.S. 6-2-109, manslaughter is a
felony punishable by imprisonment in the penitentiary for not
more than twenty (20) years.
Notes of Decisions
Cited in 59 cases (13 in the last 5 years), 1984–2026 · leading case: State v. Keffer, 860 P.2d 1118 (Wyo. 1993).
Sort: Relevance Newest Treatment
State v. Keffer, 860 P.2d 1118 (Wyo. 1993). · cites it 10× “§ 6-2-105 (1988) (emphasis added). The manslaughter statute's language, however, does not make the absence of malice an element of that crime.”
State v. Sodergren, 686 P.2d 521 (Wyo. 1984). · cites it 8× “" Section 6-2-105, W.S. 1977 (June 1983 Replacement).”
Jeremiah Ethan Samuel Shull v. State, 2017 WY 14 (Wyo. 2017). · cites it 6× “Wyo. Stat. Ann. § 6-2-104 . A conviction of voluntary manslaughter carries no minimum penalty and a maximum penalty of twenty years imprisonment.”
Johnson v. State, 2003 WY 9 (Wyo. 2003). · cites it 6× “The State of Wyoming would move to amend Count I (the felony murder) to a count of involuntary manslaughter charging that your client did unlawfully kill a human being, to wit: Thomas Johnson, without malice, expressed or implied, involuntarily but recklessly, in violation of…”
Richard Cameron Wilkerson, 2014 WY 136 (Wyo. 2014). · cites it 5× “Under Wyo. Stat. Ann. § 6-2-105 , manslaughter, which is a lesser-included offense of second-degree murder, requires a showing that the defendant acted "recklessly.”
Vigil v. State, 859 P.2d 659 (Wyo. 1993). · cites it 6× “Wyo.Stat. § 6-2-105 (1988) (emphasis added).”
Brian J. Noel v. The State of Wyoming, 2014 WY 30 (Wyo. 2014). · cites it 8× “On July 3, 2012, a written plea agreement and Amended Information were filed with the District Court, amending Noel's charges to two counts of attempted voluntary manslaughter pursuant to Wyo. Stat. Ann. §§ 6-2-105 (a)(i) (LexisNexis 2008) and 6-1-301(a).”
Shey Elan Bruce, 2015 WY 46 (Wyo. 2015). · cites it 4× “]" Wyo. Stat. Ann. § 6-2-105 (a)(i) (LexisNexis 2013).”
Miller v. State, 755 P.2d 855 (Wyo. 1988). · cites it 6× “See § 6-2-105, W.S. 1977 (Cum.Supp. 1985). [5] These proposed instructions are insufficient as aiding and abetting manslaughter instructions.”
Cook v. State, 841 P.2d 1345 (Wyo. 1992). · cites it 5× “, Wyo.Stat. §§ 6-2-105; 6-2-106; 6-2-107; 6-2-303; 6-2-305; 6-2-306; 6-2-307; 6-2-312; 6-2-401; 6-2-503; 6-3-402; 6-4-101; 6-4-102; 6-4-201; and 6-4-402.”
Cheatham v. State, 719 P.2d 612 (Wyo. 1986). · cites it 6× “Cheatham then was charged with and convicted of involuntary manslaughter for causing his wife's death in violation of § 6-2-105(a)(ii)(B), W.S. 1977 (June 1983 Rev.”
Sodergren v. State, 715 P.2d 170 (Wyo. 1986). · cites it 6× “1982), would have little, if any, precedential value in that the manslaughter statute has been amended several times, and is now § 6-2-105, W.S. 1977 (Cum.Supp. 1985). [3] In urging that § 6-4-107 is unconstitutional, appellant, in effect, again invites us to reexamine our…”
Show all 59 citing cases →
— Wyo. Stat. § 6-2-105(a) — 2 cases
Vincent Daniel Hayes v. The State of Wyoming, 2024 WY 135 (Wyo. 2024).
Sanders v. State, 7 P.3d 891 (Wyo. 2000).
— Wyo. Stat. § 6-2-105(a)(1) — 1 case
Santana Mendoza v. State, 2016 WY 31 (Wyo. 2016).
— Wyo. Stat. § 6-2-105(a)(i) — 9 cases
State v. Keffer, 860 P.2d 1118 (Wyo. 1993). “§ 6-2-105 (1988) (emphasis added). The manslaughter statute's language, however, does not make the absence of malice an element of that crime.”
Griffin v. State, 749 P.2d 246 (Wyo. 1988).
Stice v. State, 799 P.2d 1204 (Wyo. 1990).
Shepard v. State, 720 P.2d 904 (Wyo. 1986).
Jeremiah Ethan Samuel Shull v. State, 2017 WY 14 (Wyo. 2017). “Wyo. Stat. Ann. § 6-2-104 . A conviction of voluntary manslaughter carries no minimum penalty and a maximum penalty of twenty years imprisonment.”
— Wyo. Stat. § 6-2-105(a)(ii) — 8 cases
Murray v. State, 855 P.2d 350 (Wyo. 1993).
United States v. Castillo, 896 F.3d 141 (2d Cir. 2018).
Duran v. State, 990 P.2d 1005 (Wyo. 1999).
State v. Keffer, 860 P.2d 1118 (Wyo. 1993). “§ 6-2-105 (1988) (emphasis added). The manslaughter statute's language, however, does not make the absence of malice an element of that crime.”
Olson v. State, 960 P.2d 1019 (Wyo. 1998).
— Wyo. Stat. § 6-2-105(a)(ii)(A) — 1 case
Bell v. State, 693 P.2d 769 (Wyo. 1985).
— Wyo. Stat. § 6-2-105(a)(ii)(B) — 2 cases
Cheatham v. State, 719 P.2d 612 (Wyo. 1986). “Cheatham then was charged with and convicted of involuntary manslaughter for causing his wife's death in violation of § 6-2-105(a)(ii)(B), W.S. 1977 (June 1983 Rev.”
Small v. State, 689 P.2d 420 (Wyo. 1984).
— Wyo. Stat. § 6-2-105(b) — 3 cases
Sodergren v. State, 715 P.2d 170 (Wyo. 1986). “1982), would have little, if any, precedential value in that the manslaughter statute has been amended several times, and is now § 6-2-105, W.S. 1977 (Cum.Supp. 1985). [3] In urging that § 6-4-107 is unconstitutional, appellant, in effect, again invites us to reexamine our…”
Shepard v. State, 720 P.2d 904 (Wyo. 1986).
Cook v. State, 841 P.2d 1345 (Wyo. 1992). “, Wyo.Stat. §§ 6-2-105; 6-2-106; 6-2-107; 6-2-303; 6-2-305; 6-2-306; 6-2-307; 6-2-312; 6-2-401; 6-2-503; 6-3-402; 6-4-101; 6-4-102; 6-4-201; and 6-4-402.”
Annotations are extracted automatically from the opinions in the Syfert caselaw corpus and ranked by authority, recency, and treatment. Dots show Syfertize treatment of the citing case itself.