Does Billy Graham believe in speaking in tongues?

Yes, Mr. Graham does believe in the baptism of the Holy Spirit, but not in the manner of the Pentecostal, Holiness, Church of Christ, etc. It was/is the Church that was baptized(anointed) and not particular individuals. In order to participate in the power of this anointing one has first to be saved and then to become a part(member) of God's Church, the Church of the Lord Jesus Christ.