Natural Gas Regulatory Reform Act of 1985 - Title I: Removal of Wellhead Price Controls and Repeal of Natural Gas Act Jurisdiction Over Certain First Sales of Natural Gas - Amends the Natural Gas Policy Act of 1978 to: (1) remove wellhead price controls over natural gas prices; (2) repeal the jurisdiction of the Federal Energy Regulatory Commission (FERC) over natural gas exempt from wellhead price controls; (3) repeal the President's standby price control authority; and (4) repeal congressional review over natural gas price controls.

Title II: Repeal of Certain Restrictions on the Use of Natural Gas and Petroleum- Amends the Powerplant and Industrial Fuel Use Act of 1978 to: (1) repeal the prohibitions against the use by electric powerplants and major fuel-burning installations of petroleum and natural gas as primary energy sources: (2) remove the restrictions placed upon Federal major fuel-burning installations against the use of natural gas and petroleum as primary energy sources; (3) repeal the guidelines for the emergency use of natural gas or petroleum as a primary energy source by any person operating a peakload powerplant or a major fuel-burning installation.

Revokes the authority of the Secretary of Energy to require any major fuel-burning installation to furnish certain information regarding the use of primary energy sources of fuel.

Title III: Repeal of Incremental Pricing Requirements- Amends the Natural Gas Policy Act of 1978 to repeal the natural gas incremental pricing provisions. States that incremental pricing rules promulgated by FERC shall continue in effect only with respect to the flow-through of costs incurred before enactment of this section, including any surcharges based on such costs.

Title IV: Separability- Sets forth separability provisions.