Will Arnett has been married twice: first to actress Penelope Ann Miller and later to comedian Amy Poehler.

Main answer

  • Will Arnett’s first marriage was to actress Penelope Ann Miller; they wed in 1994 and split in 1995.
  • His best-known marriage was to comedian Amy Poehler; they married in August 2003 and finalized their divorce in 2016.

Extra context

  • With Amy Poehler, Arnett has two sons, Archie (born 2008) and Abel (born 2010).
  • After his marriages, he has been in long-term relationships, notably with Alessandra Brawn, with whom he shares a son, Alexander “Denny” Denison Arnett (born 2020).

TL;DR: Will Arnett was married to Penelope Ann Miller (mid‑1990s) and later to Amy Poehler (2003–2016).

Information gathered from public forums or data available on the internet and portrayed here.