| Arnaldo Villalba | |
| Fullname: | Arnaldo Villalba Benítez |
| Birth Date: | 1978 10, df=yes |
| Birth Place: | Ciudad del Este, Paraguay |
| Height: | 1.82 m |
| Position: | Forward |
| Years1: | 1996 |
| Clubs1: | Olimpia |
| Years2: | 2000 |
| Clubs2: | Sol de América |
| Years3: | 2003 |
| Clubs3: | Tupi |
| Years4: | 2003–2004 |
| Clubs4: | PSMS Medan |
| Years5: | 2005 |
| Clubs5: | Rampla Juniors |
| Years6: | 2006 |
| Clubs6: | Cerro Porteño |
| Years7: | 2007 |
| Clubs7: | 3 de Febrero |
| Years8: | 2007 |
| Clubs8: | Alianza Atlético |
| Years9: | 2008 |
| Clubs9: | Persibom Bolaang Mongondow |
| Years10: | 2008–2010 |
| Clubs10: | Persijap Jepara |
| Years11: | 2010 |
| Clubs11: | Cobresol |
| Years12: | 2011–2012 |
| Clubs12: | Barito Putera |
| Years13: | 2012 |
| Clubs13: | Persis Solo |
Arnaldo Villalba Benítez (born 21 October 1978) is a Paraguayan former professional footballer who played as a forward.