John Lefebvre (born August 6, 1951), is a Canadian musician, composer, entrepreneur, retired lawyer and philanthropist.

In 2017 Lefebvre published his first book, All's Well - Where Thou Art Earth And Why, a work of political, moral and legal philosophy.

Lefebvre first garnered public attention in 1999, when he was involved with Neteller (now known as Paysafe), an online money transfer facility.

Ahern gathered a skookum studio band for the album, which included Jim Keltner, Hutch Hutchinson, Greg Leisz, Patrick Warren, Dean Parks, Al Kooper, Matt Rollings and Mac McAnally.

Lefebvre and James Hoggan are co-founders of the DeSmogBlog.com group of blogs, which focus on topics related to global warming.