Sidhu's wife Navjot Kaur, who is Chief Parliamentary Secretary (Health) in the SAD-BJP government in Punjab, was also not seen at the rally.
Sidhu, an MP from Amritsar, has been at loggerheads with the SAD leadership accusing it of sidelining his projects in the holy city.
The BJP lawmaker was not present at the rally which was attended among others by Punjab Chief Minister Parkash Singh Badal, his Deputy Sukhbir, BJP chief Rajnath Singh and state BJP head Kamal Sharma.
However, Kamal Sharma had told reporters in Ludhiana yesterday that it was a party function and all were invited.
Recently, Sidhu's wife, an MLA from Amritsar (East), had kicked up a row by commenting on a social networking site that her husband felt "sidelined and ignored" in his own party.