Hamilton joined the Aviva Premiership outfit from Edinburgh last summer and enjoyed a fine start to life at Kingsholm as he helped the Cherry and Whites to win the LV= Cup and reach the last four in the Premiership.
Hamilton, who is in the Scotland squad for their upcoming World Cup campaign, is delighted to have followed in the footsteps of England wing Charlie Sharples by committing his future to Gloucester.
"It's a privilege and an honour to sign a contract extension," he said.
"I've found my home so there was never any thoughts about going anywhere else. This is a working class club that looks after not just players but families.
"(Head coach) Bryan Redpath told me at the end of last season that he wanted me to be a big part of what happens at the club moving forward, and I was delighted. He sat me down and we had a chat and it's always been on the cards since then.
"I love it here and so does my family, we've found our home and we're very excited about what's to come."
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.