The 30-year-old has agreed an extension to prolong his tenure Stateside.
Red Bulls sporting director Ali Curtis was full of praise for the attacker and admitted he was delighted to extend Sam’s contract.
"Lloyd has been a key player for this club the past few seasons and we're very excited to have him in a Red Bull uniform for the coming years," the American supremo admitted in a statement.
"Lloyd is a very dynamic player on the wing and provides a great attacking threat for us.”
Sam spent seven years on the books of Charlton between 2003 and 2010, making 119 league appearances and also featuring out on loan at Leyton Orient, Sheffield Wednesday and Southend United.
He moved to Leeds in 2010, but was loaned out to Notts Country before making the switch to the MLS Franchise in 2012.
Since moving to America, Sam has been an important player for the Red Bulls and has made 48 MLS appearances for his current employers, scoring nine goals in the process.
Sam made one solitary appearance for England under-20’s back in 2005 and scored on his debut against Russia.