| Ferdinand Maximilian II | |
| Count of Ysenburg-Büdingen-Wächtersbach | |
| Reign: | 14 March 1703 – 21 April 1755 |
| Predecessor: | Ferdinand Maximilian I, Count of Ysenburg-Büdingen-Wächtersbach |
| Successor: | Ferdinand Casimir I, Count of Ysenburg-Büdingen-Wächtersbach |
| Birth Date: | 12 January 1692 |
| Birth Place: | Wächtersbach |
| Death Place: | Wächtersbach |
| House: | Isenburg |
| Spouse: | |
| Issue: | Ferdinand Casimir I Albert August William Reinhard Adolph I Louis Maximilian I |
| Father: | Ferdinand Maximilian I, Count of Ysenburg-Büdingen-Wächtersbach |
| Mother: | Countess Albertine Marie of Sayn-Wittgenstein-Berleburg |
Ferdinand Maximilian II of Isenburg-Wächtersbach was a German count of Isenburg-Wächtersbach from 1703 to 1755. The county itself lasted from 1673 to 1806 in the central Holy Roman Empire, until it was mediated to Isenberg.