There are a lot of options for income investors to choose from on the Australian share market.

So many, it can be hard to decide which ones to buy!

To narrow things down, let's take a look at three ASX dividend shares that analysts are tipping as buys. They are as follows:

National Australia Bank Ltd (ASX: NAB)

The team at Morgan Stanley thinks that this big four bank could be an ASX dividend share to buy.

Although its first quarter update was a touch softer than the broker was expecting, it remains positive on the banking giant. In fact, it ranks NAB as its top pick among the big four players right now and sees value in its shares at current levels.

In addition, it is expecting some attractive dividend yields from its shares in the near term. The broker is forecasting fully franked dividends per share of $1.70 in FY 2025 and then $1.75 in FY 2026.

Based on the current NAB share price of $34.55, this would mean dividend yields of 4.9% and 5.1%, respectively.

Morgan Stanley has an overweight rating and $37.40 price target on NAB's shares.

Regal Partners Ltd (ASX: RPL)

Bell Potter thinks that this alternative investment company's shares are being seriously undervalued by the market following a recent decline.

This led to the broker stating its belief that "investors should take advantage of recent share price weakness to BUY."

Especially given the prospect of some generous dividend yields in the coming years. Bell Potter is forecasting fully franked dividends per share of 18.3 cents in FY 2025 and then 22 cents in FY 2026.

Based on its current share price of $3.10, this equates to dividend yields of 5.9% and 7.1%, respectively.

Bell Potter has a buy rating and $5.00 price target on Regal Partners' shares.

Dicker Data Ltd (ASX: DDR)

A final ASX dividend share that analysts are tipping as a buy is Dicker Data. It is a leading technology hardware, software, cloud, and cybersecurity distributor.

The team at UBS is positive on the company and sees upside risk to earnings estimates from a potential recovery in demand from the SME sector.

For now, the broker is forecasting fully franked dividends per share of approximately 49 cents in FY 2025 and then 53 cents in FY 2026. Based on the latest Dicker Data share price of $8.63, this would mean yields of 5.7% and 6.15%, respectively.

UBS currently has a buy rating and $10.20 price target on Dicker Data's shares.