Lauren Ambrose vs Rachel Griffiths

1 shared category

• 2003 Outstanding Supporting Actress in a Drama Series · 55th Emmys
  both lost to Tyne Daly

Named on the same nomination

Ballot lines that credit both of them — the same nomination, not competing entries.

• 2006 Ensemble in a Drama Series · Six Feet Under · 12th SAG Awards
• 2005 Ensemble in a Drama Series · Six Feet Under · 11th SAG Awards
• 2004 Ensemble in a Drama Series · Six Feet Under · 10th SAG Awards Won
• 2003 Ensemble in a Drama Series · Six Feet Under · 9th SAG Awards Won
• 2002 Ensemble in a Drama Series · Six Feet Under · 8th SAG Awards

Nominated for the same title

Both nominated in connection with these, on separate ballot lines.

• Six Feet Under Lauren Ambrose Outstanding Supporting Actress in a Drama Series
  Rachel Griffiths Best Actress – Television Series Drama, Best Supporting Actress – Series, Miniseries or Television Film, Outstanding Lead Actress in a Drama Series, Outstanding Supporting Actress in a Drama Series