  We present the Strategic Scientific Plan (SSP) for the direction and
activities of the Gemini Observatory in the 2020s. The overarching goal is to
ensure that Gemini best uses the available resources to serve the needs of its
international user community throughout the coming decade. The actionable items
fall into three general categories: (1) preserving Gemini's current facilities
and strengths; (2) developing instrumentation and software systems, including
data pipelines, to enable new scientific capabilities that build on those
strengths; (3) strategizing how visiting instruments can deliver additional
valuable capabilities. We provide a high-level timeline (schematically
illustrated in one figure) for the main developments discussed in this SSP. The
schedule is ambitious, but in light of the recent Gemini in the Era of
Multi-Messenger Astronomy (GEMMA) award from the NSF, the plan becomes
achievable. Lists of milestones are given for gauging progress. As these
milestones are reached and new instruments become available, some current
instruments will need to be retired; we make recommendations in this regard.
The final section concludes by reemphasizing the importance of a strong
partnership committed to the needs of all members.
