Investment planning is a part of investment analysis that contains real investments, such as machines, lands, a new plant, a new ERP system implementation etc. Investment analysis concerns evaluation and comparison of the investment projects. In the planning phase timing is the important point to execute the project. A production system is an aggregation of equipment, people and procedures to perform the manufacturing operations of a company. Production systems can be divided into categories named facilities and manufacturing support systems. The facilities of the production system consist of the factory, the equipment, and the way the equipment is organized. In this chapter, the components of investment planning are given. Then, the fuzziness of the investment is presented. Fuzzy present worth, fuzzy annual worth, fuzzy rate of return analysis, fuzzy B/C ratio, fuzzy replacement analysis and fuzzy payback period techniques -performed in this chapter- are fuzzy investment analysis techniques. At the last section application of these techniques are subjected.