INTRODUCTION: Nearly 9 out 10 pregnant women with substance use disorder (SUD) have unintended pregnancies. Little is known about women with SUD's intentions regarding their partner's role in their life. The objective of this study was to determine the proportion of pregnant women with SUD who plan on current partner and/or “father of the baby” involvement in their life and to characterize partner drug use. METHODS: An anonymous survey was distributed from December 2018—September 2019 to pregnant women seeking care in specialty multi-disciplinary prenatal clinic for women with SUD. Descriptive statistics were used to describe participant's responses. RESULTS: We collected 110 individual surveys. More than 7 out of 10 pregnant women reported that they planned partner involvement in their life (n=78, 71%) or their infant's life (n=80, 73%). The majority (n=55, 51%) planned for partner attendance at all or most prenatal visits. 54% (n=59) reported partner drug use in the past year, specifically opioids (n=39, 66%), methamphetamines (n=35, 59%), marijuana (n=31, 52%), cocaine (n=16, 27%), benzodiazepines (n=9, 15%) and other (n=3,5) (66% used two or more substances). On a Likert scale (1 not interested—10 really interested), women reported a median score of 8 (range 1–10) when rating interest in partner drug treatment access within the prenatal setting, peer support for partners, education for partners about maternal addiction treatment, parenting and special care for infants. CONCLUSION: Because most pregnant women with SUD intend partner involvement, further studies on the role of partner in maternal pregnancy and SUD trajectories are urgently needed.