Tendulkar featured in his sixth consecutive ICC Cricket World Cup on Saturday in India's opening match of the tenth edition against Bangladesh at Mirpur.
The 37-year-old Indian made his ICC CWC debut in 1992 when Pakistan won under Imran Khan with Miandad as one of the players. Since then he has played in every ICC CWC.
Miandad made his ICC CWC debut in 1975 and featured in every edition till 1996 when it was co-hosted by India, Pakistan and Sri Lanka.
"It is great achievement and I am happy that Sachin has equalled my record and I want to congratulate him," Miandad said.
"This is a long journey and he (Tendulkar) is definitely greatest batsman in history and his records speak for itself," he was quoted as saying by Associated Press of Pakistan.
"I have the pleasure of playing against Tendulkar in 1992 and 1996 ICC CWC. In fact, my last Cricket World Cup match was against India in Bangalore," Miandad, who played 233 ODIs and 124 Test matches for Pakistan, recalled.