Jenny is voiced by Alyson Stoner who is also the voice of Isabella Garcia Shapiro.
Vincent Martella plays Phineas and Thomas Sangster plays Ferb.
Allison Stoner plays Isabella's voice in Phineas and Ferb.
Bobby Gaylor plays Buford in Phineas and Ferb love that show!
If you mean the voice of Phineas on Phineas and Ferb, then Vincent Martella.
Richard O'Brien plays Lawrence Fletcher (Flynn) on "Phineas & Ferb"
The voice for Jenny in Phineas and Ferb is Alyson Stoner.
Vincent Martella plays Phineas and Thomas Sangster plays Ferb.
Maulik Pancholy plays Baljeet on Phineas and Ferb.
Mitchell Musso plays jeremy on Phineas and ferb!
Allyson Stoner voices Isabella on Phineas and Ferb.
Alyson Stoner plays Isabella Garcia-Shapiro.
Phineas is voiced by Vincent Martella.
Phineas Flynn as Vincent Martella and Ferb Fletcher as Thomas Sangster.
Allison Stoner plays Isabella's voice in Phineas and Ferb.
He plays Phineas Flynn in the series and in Phineas and Ferb: Across The Second Dimension.
Vincent Martella is the voice of Phineas Flynn on Phineas and Feb.
He voiced by Thomas Sangster