Football Australia (FA) has pledged its support for Sam Kerr while appealing for respect for the court proceedings surrounding the Matildas captain's racial harassment case.

Kerr has yet to comment publicly after pleading not guilty in a London court to racially aggravated harassment of a police officer.

FA has been in touch with Kerr and her management amid increasing speculation about the case.

Her lawyers are set to argue an abuse of process at a pre-trial hearing on April 26 and seek to have the charge downgraded or dropped.

The April hearing comes ahead of a trial slated for next February.

Kerr was charged with using insulting, threatening or abusive words that caused alarm or distress to a police officer during an incident in Twickenham, south-west London, on January 30 last year.

Kerr was charged on January 21 this year and kept her court appearance on Monday in the UK secret from FA.

In a statement on Friday, FA chief executive James Johnson said he wanted to "reaffirm our support for Sam Kerr amidst the current allegations".

"Sam has pleaded not guilty and her right to a fair and just legal process is important," he said.

"We trust the judicial system to handle this matter appropriately and urge respect for the legal proceedings.

"We are in touch with Sam and her team and Football Australia is committed to supporting Sam throughout this process."

On Tuesday, Johnson said Kerr had failed to inform FA of the "very serious" charge.

UK's Metropolitan Police said Kerr, who plays her club football for Chelsea in England's Women's Super League, was charged in relation "to an incident involving a police officer who was responding to a complaint involving a taxi fare".