Some of the big names in Silicon Valley get all the attention.

Everybody knows not to cross Ron Conway, that Marc Andreessen is the ultimate connected introduction broker, and that Paul Graham’s Y Combinator has changed how funding is done.

But there are plenty of powerful people who shun the spotlight.

We asked around: who are the quiet people in Silicon Valley who get things done? The bankers and lawyers who are in the room when the deal is signed? The introduction brokers and quiet board members who companies look to for advice?

We took the responses and picked 13 names that seemed particularly interesting. Some are up-and-comers whose power may be underestimated, some are old names that won’t surprise anybody who’s worked in the Valley for the last two decades.

Ted Wang, attorney at Fenwick & West

Several respondents pointed to Fenwick & West as one of the most important law firms in the Silicon Valley startup scene.

Of those attorneys, Ted Wang’s came up the most often — more often than any other person on this list, in fact.

Wang’s clients have included some of the biggest VCs (Andreessen Horowitz, Accel, Sequoia) and some of the hottest tech startups of the current boom (Facebook, Twitter, Groupon, Square, Path, and Dropbox), and one respondent spoke highly of his work with Marc Andreessen on standardizing documents for seed round equity investments.

Other Fenwick & West attorneys mentioned included Mark Stevens and Sam Angus.

Quincy Smith, investment banker with CODE Advisors

Smith cofounded CODE Advisors, an under-the-radar investment banking firm with big clients like Spotify and Comcast.

He and the firm are incredibly well connected and highly regarded as a place to handle banking duties for mid-sized firms looking for an exit. They’re not in the news much, but recently were named as helping Angie’s List prepare for its IPO.

Smith got his start in VC working for the firm founded by Jim Barksdale (the CEO of Netscape) and Allen & Company, which helped underwrite Google’s IPO. In 2006, he oversaw CBS’s acquisition of CNET, which turned into CBS Interactive, then left to found CODE Advisors in 2010.

Keith Rabois, COO of Square and prolific investor/advisor

Rabois was named as an up-and-comer by a couple respondents, and it’s easy to see why — he sits on the board of directors at PayPal, LinkedIn, and Yelp, is an advisor to Google, and has investments in a bunch of hot startups like Yammer, Palantir, and Eventbrite.

Most recently, he’s been in the public eye as the chief operating officer of payments company Square.