The attacks are the worst on European soil since the 2004 Madrid bombings, which killed 191 people.
Spanish Prime Minister Mariano Rajoy on Saturday morning sent a message of solidarity to the French people.
"Today we are all France," he said in a press conference, held at 10.30am on Saturday morning.
The Spanish PM offered France all the help it needed from its southern neighbour "we are at your side in sorrow and in battle".
Rajoy tweeted his support to France.
The conservative Prime Minister was holding an emergency meeting of Spain's National Security Council on Saturday morning, which will consider tightening security measures and raising the terror alert in Spain.
"There is no cause that justifies this. We are in a struggle between civilisation and brutality. Today, we are all France," Rajoy said.
"We will win. They can hurt us, but they will not win," he added.
Rajoy spoke with Spanish-born French Prime Minister Manuel Valls last night, as well as his fellow party leaders in Spain, Socialist leader Pedro Sanchez, Ciudadanos leader Albert Rivera and Podemos leader Pablo Iglesias.
Spanish media are reporting that one Spaniard was "lightly injured" in the attacks. He was reportedly attending the concert in the Bataclan concert hall with two fellow Spaniards, when gunmen opened fire on the crowd.