Fin-based thin film resistors, and methods of fabricating fin-based thin film resistors, are described. In an example, an integrated circuit structure includes a fin protruding through a trench isolation region above a substrate. The fin includes a semiconductor material and has a top surface, a first end, a second end, and a pair of sidewalls between the first end and the second end. An isolation layer is conformal with the top surface, the first end, the second end, and the pair of sidewalls of the fin. A resistor layer is conformal with the isolation layer conformal with the top surface, the first end, the second end, and the pair of sidewalls of the fin. A first anode or cathode electrode is electrically connected to the resistor layer. A second anode or cathode electrode is electrically connected to the resistor layer.