Creo Parametric, formerly known, together with Creo Elements/Pro, as Pro/Engineer (commonly referred to as Pro E) and Wildfire, is a solid modeling or computer-aided design (CAD), computer-aided manufacturing (CAM), computer-aided engineering (CAE), and associative 3D modeling application, that runs on Microsoft Windows.

Creo Parametric should not be confused with Creo Elements/Direct Modeling, formerly CoCreate ME10 (2D) and or ME30 (3D) CAD Products. The ex-CoCreate CAD Products are now owned by PTC and renamed Creo Elements/Direct Drafting and Creo Elements/Direct Modeling.

Creo Parametric is an application of a suite of 10 that provide collaborative solid modeling, assembly modelling, 2D orthographic views, finite element analysis, parametric modelling, sub-divisional and non-uniform rational B-spline (NURBS) surface modeling, technical drawing (drafting), and numerical control (NC) and tooling functionality for mechanical designers.

Creo Parametric competes directly with CATIA, SolidWorks, NX/Solid Edge, Inventor/Fusion, IRONCAD, and Onshape. It was created by Parametric Technology Corporation (PTC) and was the first of its kind to market.

The software uses a specific file naming scheme, not allowing certain characters like ä, ö, é, ő, ł, Đ, ... (including spaces).

Creo Parametric (formerly Pro/Engineer), PTC's parametric, integrated 3D CAD/CAM/CAE software, is used by manufacturers for mechanical engineering, design, and manufacturing.

Pro/Engineer was the industry's first rule-based constraint (sometimes called "parametric" or "variational") 3D CAD modeling system. The parametric modeling approach uses parameters, dimensions, features, and relationships to capture intended model behavior. This design approach can be family-based or platform-driven, where the strategy is to use engineering constraints and relationships to quickly optimize the design, or where the resulting geometry may be complex or based upon equations. Creo Parametric provides a complete set of design, analysis and manufacturing abilities on one, integral, scalable platform. These required abilities include solid modeling, surfacing, rendering, data Interoperability, routed systems design, simulation, tolerance analysis, numerical control (NC) and tooling design.

Creo Parametric can be used to create a complete 3D digital model of manufactured goods. The models consist of 2D and 3D solid model data which can also be used downstream in finite element analysis, rapid prototyping, tooling design, and CNC manufacturing. All data are associative and interchangeable between the CAD, CAE, and CAM modules without data conversion. A product and its entire bill of materials (BOM) can be modeled accurately with fully associative engineering drawings, and revision control information. The associativity functionality in Creo Parametric enables users to make changes in the design at any time during the product development process and automatically update the end products. This ability enables concurrent engineering – design, analysis and manufacturing engineers working in parallel – and streamlines product development processes.