I am a US citizen living abroad, can I sponsor my wife for her Green Card?

You essentially have to go through the same process that you would in the United States.
Some embassies will allow you to go through the process there if you have resided in that country for a certain period of time.
Some countries have immigration offices to assist with the process, for example it is not uncommon in London, Rome, and India to do so.

How Do I Qualify for an O-1 Visa?
The O-1 visa is a type of nonimmigrant employment-based visa. Notably, it is exclusively reserved for foreigners with extraordinary abilities in the sciences, education, business, or athletics (i.e., the O-1A visa). Or, those who have proven extraordinary ability in the arts or extraordinary achievements in the motion picture or television…
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What Is a B-1, B-2 Visa?
You may love your home country and have no intention of moving away at any point. However, you may have your reasons for wanting to partake in an extended visit to the United States. Depending on how long you wish to stay, and why, this may require more than just…
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What Are the Different Types of U.S. Visas?
Like many other foreigners, it may be your lifelong dream or goal to experience life in the United States, even if it is only temporary. Well, you may be happy to hear that the United States Citizenship and Immigration Services (USCIS) offers many pathways toward entering the country legally. The…
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Can I Apply for Citizenship if I Have a Criminal Record?
You may have regretfully committed a crime while living in your home country quite some time ago. You may have learned your lesson thoroughly and changed your morals and character significantly since then. While you may want nothing more but to put the entire thing behind you, it may follow…
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