The Best Of Kate Miller-Heidke: Act One is a two-disc greatest hits albums by Australian musician, Kate Miller-Heidke. The album features of Miller-Heidke's greatest hits, including the new single "You've Underestimated Me, Dude". The second disc features a collection of rarities, covers, live versions and previously unreleased material.

CD1

1. "Space They Cannot Touch" - 4:08
2. "Words" - 3:33
3. "Mama" - 3:05
4. "Little Adam" - 4:55
5. "Can't Shake It" - 3:16
6. "Caught in the Crowd" - 3:33
7. "The Last Day On Earth" - 4:47
8. "Are You Fucking Kidding Me?" (live) - 3:24
9. "[[Walking on a Dream" - 3:43
10. "Ride This Feeling" - 3:22
11. "Sarah" - 3:55
12. "I'll Change Your Mind" - 3:01
13. "The Tiger Inside Will Eat the Child" - 4:05
14. "O Vertigo!" - 3:17
15. "Share Your Air" (featuring Passenger) - 3:32
16. "Drama" (featuring Drapht) - 2:43
17. "Sing to Me" (Denzal Park Mix) - 3:21
18. "I'm Growing a Beard Downstairs for Christmas" (featuring The Beards) - 3:31
19. "You've Underestimated Me, Dude" - 4:46
20. "Where?" (with Iain Grandame) - 4:47

CD 2 (Rarities, Covers and Live Versions)

1. "Dreams / I Love You]" -4:10
2. "Australian Idol" - 4:05
3. "Southern Cross Tattoo" - 4:09
4. "White Wine in the Sun" - 6:07
5. "Hey Little Girl" (live) - 4:20
6. "Love in a Stranger" (live) - 4:53
7. "Hornets" (live) - 4:05
8. "God's Gift to Women" (live) - 4:32
9. "The Devil Wears a Suit" (live) - 6:00
10. "Humiliation" (live) - 5:34
11. "In the Dark" (live) - 5:03
12. "Bliss" (live) - 3:57
13. "Yours Was the Body" (live) - 3:46
14. "O Vertigo!" (live) - 3:09
15. "Sarah" (live) - 4:25
16. "Can't Shake It" (live) - 3:38
17. "Elysian Fields" (live) featuring Tasmanian Symphony Orchestra - 4:03