Jigsaw LLC (formerly Google Ideas) is a technology incubator created by Google. It formerly operated as an independent subsidiary of Alphabet Inc., but came under Google management in February 2020. Based in New York City, Jigsaw is dedicated to understanding global challenges and applying technological solutions. From "countering extremism", online censorship, and cyber-attacks to protecting access to information. The current CEO is Yasmin Green.

In 2010, Eric Schmidt approached Jared Cohen to lead Google Ideas as a "think-and-do tank" to research issues at the intersection of technology and geopolitics, and has worked on projects intended to protect activists and independent media from cyber-attacks. Ideas brought together a team of Google engineers, research scientists, product managers, and policy experts to address these issues. The team also hosted a number of conferences, including the 2017 Conflict in a Connected World Roundtable Series, in partnership with the Council on Foreign Relations' Center of Preventative Action.

Ideas came under scrutiny for its links with the US State Department and its regime change activities.

In February 2016, Eric Schmidt announced in a Medium post, the expansion of Google Ideas into a technology incubator named Jigsaw. According to Schmidt, the new name "reflects our belief that collaborative problem-solving yields the best solutions" and the team's mission "is to use technology to tackle the toughest geopolitical challenges, from countering violent extremism to thwarting online censorship to mitigating the threats associated with digital attacks". Jigsaw was expected to leverage more of Alphabet's engineering talent and resources to build more sophisticated products. Jared Cohen, formerly with the Policy Planning Committee at the US State Department, was the CEO of Jigsaw until 2022.

In January 2023, Alphabet announced about 12,000 employees being laid off. Citing conversations with anonymous former employees, Forbes reported the Jigsaw team of 50 was reduced by somewhere between a third and a half. The company did not disclose numbers or employees a reason but Jigsaw was not generating revenue.

In 2013, Jigsaw (then known as Google Ideas) teamed up with researchers at the University of Texas and the University of Chicago to launch Constitute, an indexed repository of national constitutions. The objective of the project is to identify a coherent set of constitutional options and sample text for those writing constitutions. The site was one of the early uses of the Semantic Web as a data model. The project has undergone regular updates since 2013 and is used by scholars, citizens, and constitutional drafters.

In February 2017, Jigsaw and Google launched the free Perspective API, "a new tool for web publishers to identify toxic comments that can undermine a civil exchange of ideas". Using machine learning technology, Perspective offers a score from zero to 100 on how similar new comments are to others previously identified as toxic, defined as how likely a comment is to make someone leave a conversation. Publishers can use Perspective in a number of ways, from offering readers instant feedback on the toxicity of their comments to giving readers the power to filter conversations based on the level of toxicity they'd like to see. Jigsaw claims "its AI can immediately spit out an assessment of the phrase’s 'toxicity' more accurately than any keyword blacklist, and faster than any human moderator". Perspective's launch partners included The New York Times, The Guardian, The Economist and Wikipedia. The research on Wikipedia started discussion about Artificial intelligence in Wikimedia projects.

In June 2017, The New York Times announced that as a result of the partnership with Jigsaw, the Times will offer comments on all top stories and scale comments to 80% of its articles by the end of the year.