In 1997, Italian band Elio e Le Storie Tese dedicated a song and a video, 'Rocco e Le Storie Tese', to Siffredi. Siffredi himself directed the video, also appearing in it. He also duetted with the band in the song 'Un bacio piccolissimo' at the 63rd edition of the Sanremo Music Festival. He has also done a cameo appearance as himself in the 2018 Italian comedy film Natale a cinque stelle.
Siffredi is married to Rosa Caracciolo (born Rózsa Tassi), a Hungarian model whom he met in 1993 in Cannes and with whom he performed two years later in Tarzan X: Shame of Jane.
