Verdict: No
No. Quicken Classic is sold for Windows and Mac only and will not run on Linux. Quicken Simplifi, a separate subscription product from the same company, does work because it runs in a browser.
Quicken's published system requirements cover Windows 10 and 11 for Quicken Classic on Windows, and recent versions of macOS for Quicken Classic on Mac. Linux is not mentioned. The program leans on Windows components and bank connection services, and it is not something to try forcing through a compatibility layer when your financial records are at stake.
Quicken Simplifi is the company's browser-based product. The same requirements page confirms it runs in current versions of Chrome, Edge, Safari and Firefox, all of which are available on Linux. It is a different product with a different subscription and a simpler feature set, aimed at budgeting and tracking rather than deep investment and tax reporting.
For most home users switching to Linux, a free installed program is the tidier answer. GnuCash is the most capable and handles proper double-entry accounts, investments and reports. HomeBank is far easier to get going with if you mainly want to track spending against a budget. KMyMoney sits between the two and its layout will feel familiar to a Quicken user.
Your existing data is the sticking point. A .qdf file is Quicken's own format and no Linux program opens it. Before you leave Windows, export your accounts to QIF or CSV from within Quicken, which all three alternatives can import. Expect categories and investment history to need tidying by hand, and keep the original file and a Windows machine or virtual machine around until you are satisfied nothing important was dropped.
Free, mature and genuinely capable, including investments, loans and reports. Uses formal accounting ideas, so allow a weekend to settle in.
Your files: Cannot open .qdf files. Imports QIF, OFX and CSV exports from Quicken, with categories usually needing manual fixing.
Account-and-register layout that a Quicken user will recognise quickly, with budgets and basic investment tracking.
Your files: Imports QIF, OFX and CSV. No .qdf support.
The simplest of the three. Good for household budgeting and spending charts, not for investment or tax detail.
Your files: Imports QIF, OFX and CSV exports. No .qdf support.
One stubborn program doesn't have to decide the whole question. You can keep Windows on the same PC and restart into it only when you need Quicken. Everything else you do can move.
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