Capital market as part of financial markets plays an important role in a market economy. The savings from in different sectors of the national economy are transferred to companies by these markets for investing in industry. Since achieve to economic growth & development is not possible without of long term financial resources, attention to key role of capital market has great importance. Capital Market that is the market for supply & dem& of financial resources, when can well plays its vital role that supply & dem& for funds be optimal allocated. The main prerequisite for the optimum allocation of resources in the capital market is efficient in its performance. Differentness of efficient capital market & inefficient market arises from the information phenomenon, its transparency & access to information. If the capital market-related information (comprehensive, coherent & effective on market activity) be greater, its effect on growth & economic development of the capital market will increase. Hence, present paper after the note theoretical expressions of capital market transparency & efficiency, was checked the status of Iran's capital market efficiency. Finally, the paper offers ethical-Islam teachings that are effective on barriers reduction & transparency increase in the market such as: honesty, fairness, no harm to others & etc.

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